Fumigation: what is it, how, what and by whom is it carried out and why is it needed

Hello! I don’t even know if the city dwellers were happy with their purchase. And they bought a plot with a house in our village.

That's just in the house there were whole crowds of various parasites. The new owners decided to immediately deal with this problem.

Fumigation was carried out last week. Not every day you see such a procedure through a couple of houses from yourself. Oh yes! Now I’ll tell you more about fumigation: what is it and what are the main stages. Maybe someone would also like to use such a reliable way to get rid of parasites.

What is fumigation?

Fumigation will help protect food supplies, protect your business and not lose your reputation - the fight against barn pests and other flying insects. Fumigation is one of the most effective and inexpensive methods of disinfecting food and non-food products from pests.

Thus, drugs can deeply affect the processed object, and this in turn guarantees a 100% result.

Where is it held?

A prerequisite for each production facility is the timely conduct of fumigation. This procedure should be performed in warehouses, elevators, bakeries, groats shops, mills, flour mills, stockyards, greenhouses.

The fumigation of vehicles, libraries, book archives and other rooms where long-term storage of materials and antiquities is also of great importance.

The main goal of fumigation is to quickly and effectively destroy insects that cause significant material damage, while maintaining the original quality, taste and smell of the product.

What is being done?

Holding this event is associated with a rather high risk. A huge number of expensive food and non-food products, the importance of safety for the life and health of personnel in the enterprise, as well as other features require a professional, careful and attentive approach.

Since fumigation is associated with great responsibility, it is reasonable to entrust it to the appropriate company organizations that provide such services.

When qualified specialists are involved in fumigation, you get the following:

• fast, high-quality and long-term processing of the object;
• a guarantee for the work performed;
• safe handling for people, products and materials;
• solving issues of any complexity at the most affordable prices for fumigation.

How is fumigation

Arriving at the site, experts evaluate the area of ​​the object, materials and products that must be processed, the scale of infection with insects and much more. Depending on each specific situation, professionals perform the sealing of the object, after which they begin to carry out disinfection. It can be performed by the two most common methods.

By the way, the drug does not mix with the product, since it is in the provided cotton bags (sleeve type), which are conveniently removed after the end of fumigation.

Fumigation or Aeration Method (condescending air flow) - a long-established and effective method! He very deeply processes the product or material with fumigants, completely eliminating any kind of insect. It is used, as mentioned above, a special system (generator) of a fan, pipes and couplings.

In time, such disinfection is twice as fast as the previous one, and not only adults, but also their larvae die on the next or second day. The method is most often used in the cold season - autumn-winter.

The whole procedure is carried out under the full control of competent specialists who are at the facility in special protective chemicals. costumes, gas masks, etc.

Before starting work, all people are removed from the premises. And when the work is finished, professionals do detoxification of the room (airing for about 4 hours) and easy wet cleaning using special tools.

Used drugs

Unambiguously, all preparations for fumigation used by employees of professional organizations for the elimination of insect pests are tested and have documented permits. Hydrogen phosphorus is used both in finished form and in tablets (magtoxin, fostoxin, etc.).

In any case, the customer always has the right to check the license for the available equipment, documents of the drugs used, their expiration date and other necessary.

Fumigation: the essence of the method, types, advantages

Fumigation (aeration, fumigation) is a procedure for the destruction of pests by dispersing poisonous gases and their vapors. It is aimed at combating all types of insects that can spread diseases among plants.

The most common drug approved for these purposes is Phosphine. It perfectly destroys all pests and is safe for humans and animals. The Ekofon company offers high-quality fumigation services of any kind based on Fosfin.

Types of procedures

Depending on the processed object, several main types of fumigation are distinguished. Each of them has its own specifics, features, terms of implementation.

Grain fumigation. It is made directly in places of storage. Fumigation of grain is necessary for the destruction of larvae, pupae, eggs, adult insects. "Phosphine" is introduced into the space above the reserves closed with special material. The term is 7 days. The procedure is safe for humans, the drug is not adsorbed by grain.

Fumigation of containers. Fumigation of containers means the process of processing containers for storing grain and grain stocks. It is especially necessary for equipment in which products are exported.

At the same time, the container is placed in special fumigation chambers, where it is completely neutralized - all kinds of insects, their eggs and larvae are destroyed. This category also includes fumigation of pallets, boxes.

Wood fumigation. Indispensable for the destruction of woodworm insects, their larvae, as well as for the prevention of pests in the future. It is produced by treating wood with a special preparation with its further degassing (a procedure as a result of which toxic gases are completely decomposed at the molecular level).

Benefits

Fumigation has the following advantages:

1. High efficiency. It perfectly destroys not only adult insects, but also larvae, eggs, pupae, fungus and mold, rodents.
2. Universality. Suitable for processing rooms, containers, grains, wood.
3. Security. It is not harmful to humans, pets.
4. Efficiency It is made as soon as possible, does not require thorough cleaning after completion.
5. Long lasting effect. Prevents further pests.

Grain Processing in Grain Carriages

Fumigation of grain in grain wagons en route (food, seed, feed in bulk) can be carried out, according to a written application from the owner of the cargo.

The tablets of the phosphine preparation are either introduced into the grain stream when it is loaded onto the wagons, or, if this is not possible, placed on the wagons through loading hatches on the roof of the wagon through metal probes after it is loaded.

Fumigation is also possible by immersion of special capsules with the tablets of the drug in the grain to a depth of 2 m through each loading hatch of the car. When using plates / tapes, immersion in the grain is distributed evenly along the length of the car to a depth of 1 m.

Exposition 3-5 days. PKE - 25 g · h / m3. (depending on the drug used) In case of infection with bread mites, the exposure should be -10 days. PKE - 450 g · h / m3.

The recipient and the controlling organizations at the place of receipt (quarantine services, customs) must be informed by the grain sender that the grain is decontaminated along the route and must be degassed and checked for residual phosphine content in the air and intergranular space before it is inspected in accordance with the existing situation:

When fumigating grain in grain carriages, using phosphine gas generators (SGF-M2), fumigant gas is poured into the grain through exhaust pipes through loading hatches on the roof of the carriage. The filling time is 1.5 hours. Exposure is 15 hours. Degassing - 1.5 days.

In addition to the obvious economic effect of the process itself, transit fumigation using tablet preparations based on phosphine also has a number of technical drawbacks, primarily related to the limitation of the minimum processing time and the residual effects of the chemical reaction of the fumigant in the cargo, mainly depending on temperature and humidity .

These shortcomings cause significant material damage during transit fumigation during short routes.

In practice, this leads to downtime of cars in unloading places associated with a high concentration of fumigant and / or the detection of live insect pests in the cargo, resulting in significant financial losses.

What is fumigation and why is it needed?

Fumigation (fumigare - lat.) - a set of disinsection and disinfection measures aimed at the destruction of insects, rodents and microorganisms using toxic gases (fumigants).

Our products are processed using Magtoxin, a magnesium phosphide-based fumigant.

Magtoxin from Detia Degesch GmbH is a fumigant consisting of magnesium phosphide, ammonium carbamate and paraffin.

Magtoxin has excellent insecticidal activity. It quickly penetrates through packaging materials, as well as inside hermetically sealed goods.

Hydrogen phosphide effectively destroys adult pests of grain stocks (barn and rice weevil, grain sawfly, capoe beetle, southern barn moth, species of cereal moth, etc.), as well as when they are in the stages of eggs, larvae and pupae. Ammonia and carbon dioxide act as protective gases.

Benefits of Magtoxin:

Professional fumigation

Fumigation is the aeration or fumigation of rooms and open spaces in order to kill insects. This is a rather complicated process that should be carried out by a professional company with extensive experience in this field.

Fumigation of cottages and wooden cottages. So it happens, you order a wooden house from a seemingly verified construction company or team and suddenly after the construction is over you find out that your wooden house is infected with a bark beetle or other tree parasites.

A house built from contaminated wood is worthless. Only professional fumigation will save your country house from rapid destruction.

Raw materials and food. In this case, fumigation is aimed at cleaning insects from raw materials and food. Fumigation of grain and vegetables is a must for keeping your crops safe during storage or transportation.

Wooden pallets and wood. Packaging materials in the form of pallets and other wood packaging are often made from fresh wood that has not previously been processed.

Unprotected containers are constantly exposed to the harmful effects of various insects, their larvae, microorganisms, bacteria, fungi and mold, therefore, fumigation of wood is often in demand.

Fumigation is carried out in the following production areas:

• aerosol-gas treatment of storage facilities, warehouses and industrial premises;
• fumigation of grain in vehicles during its transportation;
• processing of elevators, mills, groats shops, flour-grinding rooms and bakeries;
• fumigation at home;
• elevator processing;
• fumigation of wood;
• handling loaded storage facilities.

If a warehouse requires mass extermination of insects, it is necessary to order fumigation services. This is a rather complicated process. It requires a professional approach to business.

It is rational to use fumigation for various premises, soil, a wooden house, a warehouse for food products, food products, a vessel and other objects. Both food and technical materials can be processed.

Order of conduct

Fumigation helps save residential and other premises from being destroyed by pests. The procedure is very simple. A specialist travels to an object that requires disinfection.

All funds are licensed. Fumigation is done quickly and efficiently. During work, a fumigation sign is attached to the object, warning others about the procedure. After the disinfection, a certificate is issued to persons that meets all the requirements.

Fumigant treatment

Fumigation is a procedure for the destruction of pests by dispersing poisonous gases, as well as their vapors. Pests include insects, small rodents and microorganisms that infect products, damage structures or wood products, and also carry all kinds of pathogens of dangerous diseases.

Fumigation is carried out using a fumigant. In most cases, a professional fumigant is used, a drug with a substance based on magnesium or aluminum phosphide. Fumigation with phosphine gas can process wood, grain, containers, warehouses, elevators, mills and other premises.

Phosphine Fumigation

Phosphine is a colorless poisonous gas that smells like rotten fish. This gas copes with all pests.

The phosphine fumigation technology of wooden houses involves the following activities:

Phosphine quite quickly erodes from any product, goods and grain, that is, it leaves no traces and decay products. Magtoxin after degassing breaks down into safe compounds by 97%, Fostoxin by 70%.

A few points to check before ordering a service:

1. Certification that the specialist has been trained in fumigation! Without such a document - you cannot work with phosphine !!!
2. Read reviews about the organization on the Internet on independent resources
3. Find out where the company’s office is located and whether you can visit it. Also check if the indicated address is not the place of mass registration of legal entities, what happens if there is no office itself, but there is just a legal entity. address.
4. Ask if you can pay for the service by bank transfer for legal entities.
5. Request a quotation from the organization and check all the details. By TIN, you can find out if such an organization is actually
6. Check the OKVED activity codes of the organization for the presence of disinfection activities
7. Ask if the company is a member of NP NOD (National Organization of Disinfectants)

The absence of 2 or more points should alert you. What you need to know before ordering fumigation of a wooden house with phosphine gas.

Fumigation of a residential building with phosphine.. We do not fumigate with phosphine in wooden houses and at any other objects at freezing temperatures outside! Even if the house is warm, even if you pay, even if it’s very urgent ... This can be deadly. Our company will not take such a risk.

Do not confuse the fumigation of a wooden house or any other type of fumigation that uses phospho-organic gas, phosphine, with the treatment of the house with hot fog generators, which are often passed out as fumigation. Fumigation at home involves the use of a deadly gas that is 1.5 times heavier than air (magnesium phosphide or aluminum).

Our company uses GAS, and not fine atomization by generators or vogers. Such a service cannot be cheap.

Everything that you are offered under the guise of fumigation for 3900 rubles (and similar rates) for an area of ​​100 sq.m. nothing more than an attempt to breed you for money. Instead of fumigating with gas, you will most likely receive treatment with a conventional fog generator and insecticide.

The photo below shows what Magtoxin tablets look like. This is not hot or cold fog, not forced injection of gas by the installation, namely the preparative form of gas in tablets. Upon contact with the environment, the reaction and gas evolution immediately begin.

Therefore, a sealed metal can with phosphine tablets is opened STRICTLY at the beginning of fumigation and is not used for the 2nd time. We also use Degesh tapes. The drug comes in plates and tapes. Convenient for handling large volumes.

The advantages of phosphine fumigation from bark beetles and beetles in a wooden house. Phosphine is a gas, which makes processing it even more dangerous because A person cannot track the presence of gas in a room without special equipment.

Under no circumstances should phosphine be fumigated without a special protective suit and gas mask holding PH3. Do not fumigate yourself. it may be harmful to your health.

It is highly toxic to insects and animals and can even be used for rodent deratization.

It enters the body through the respiratory system extremely negatively affects the nervous and hematopoietic systems of animals, disrupts metabolic processes in the body. It adversely affects the internal organs of the liver, kidneys, respiratory organs and blood vessels. Which leaves no chance for pests to survive.

How is the fumigation of a wooden house from beetles. It must be borne in mind that fumigation implies a number of inconveniences, the main of them is:

1. Seasonal work, fumigation is not carried out in a heated room if the heating element (oven, boiler) is in the same building. This is because in high concentrations, gas can be explosive. The house before fumigation completely de-energize and turn off the heating.
2. Because it is impossible to carry out fumigation during heating; it is carried out only at positive ambient temperatures from spring to autumn.
3. Gas is dangerous for all living things, all family members must move out for the duration of the gas exposure in the house, an average period of 5-7 days. It is STRICTLY FORBIDDEN TO ENTER AND OPEN WINDOWS AND DOORS! It may be dangerous!
4. After complete gas evolution, a specialist needs a second trip to conduct degassing, he will collect and utilize the decay products.
5. After fumigation is complete, ventilate the room for at least 3 hours!

Preparing a home for Fumigation with Phosphine:

Companies use fumigation drugs such as: Magtoxin. Magnesium Phosphide

Magtoxin (Magnesium Phosphide Based Fumigant)

Magtoxin from Detia Degesch GmbH is a fumigant consisting of magnesium phosphide, ammonium carbamate and paraffin. It is produced in the form of round tablets and pills weighing 3 g and 0.6 g, respectively. Under the influence of atmospheric air, Magtoxin releases hydrogen phosphide, the rate of release depends on temperature and humidity.

Hydrogen phosphide effectively destroys adult pests of grain stocks (barn and rice weevil, grain sawfly, capoe beetle, southern barn moth, species of cereal moth, etc.), as well as when they are in the stages of eggs, larvae and pupae.

Ammonia and carbon dioxide act as protective gases. Phosphine gas easily penetrates the structure of the tree, in all the strokes of the beetle and its larvae, leaving them no chance to hide or hide.

Since Magtoxin decomposes almost completely, the residual dust practically does not contain undecomposed metal phosphide, unlike products containing aluminum phosphide.

For comparison, for the same period of time and under the same conditions (humidity 60% and temperature 20 ° C), aluminum phosphide-based products emit about 72% hydrogen phosphide, while magnesium phosphide is completely released.

Scope of gas for fumigation. Magtoxin is intended for fumigation of large volumes of stored goods, warehouses and silos. It is especially effective for killing insects in stocks of barley, millet, oats, peanuts, rice, rye, sorghum, sunflower seeds, wheat, feed in silo containers, on barges, in storages and containers.

Due to its exceptional effectiveness, they began to use it for fumigation of wooden houses when infected with wood-eating bugs, it leaves no traces, does not spoil property, in parallel with bugs, rodents and all other insects also die. The method has no analogues in its effectiveness.

Recommendations for the use of fumigation gas. The effect of fumigation depends on a number of factors, such as the type of pest, the gas permeability of the building, temperature, humidity, packaging of goods, etc. The time of fumigation depends on the type of room and its gas tightness. The airing (degassing) time is not less than 3-6 hours.

Thanks to the special formulation of Magtoxin, its use guarantees complete safety for the employee of the disinfection service.

Benefits of the fumigant Magtoxin:

• quickly and almost completely decomposes;
• residual dust contains virtually no decomposed metal phosphide;
• economical;
• practically leaves no residues in processed products.

Fumigation of the house under the dome. In order to correctly carry out fumigation, it is necessary to achieve maximum tightness of the room, which in some situations is impossible.

In such situations, a special gas-tight dome is made. He dresses at home according to the “cap” principle. The manufacture of such a dome takes from 1 month to 3.

Symptoms of poisoning during fumigation with phosphine

Phosphine gas is very volatile if safety measures are not followed, it is easier to get poisoning, even death. Often such poisoning is confused with food poisoning, the flu, or the consequences of drinking a hangover. Signs of poisoning:

Symptoms may occur 2 days after poisoning.

Fumigation of containers

Fumigation of containers is the most important condition for carrying out various types of transportation, because without this procedure the goods can easily be spoiled by microorganisms, pests, and the packaging itself is destroyed by bark beetles and other wood lovers.

This procedure is mandatory for all wooden pallets, crates, as well as pallets, especially those in which goods are sent to other countries. According to current standards, all containers that are sent abroad must be processed.

It is also impossible to export wooden containers without a certificate of fumigation. It is the presence of fumigation that is the basis for issuing an export permit. Fumigation of boxes and containers is always necessary, it is important for each type of transportation: sea, road, rail or air.

Grain processing

Grain fumigation is used to control quarantine and barn pests during storage. Fumigation measures are performed by preparations of the phosphine group or other means with insecticides. Processing can be carried out directly in storage, when pumping grain from a silo to a silo or when loading grain.

Today, it is fumigation that processes all grain storages of the intervention and regional funds. Processing allows you to destroy not only pests, but also their eggs and larvae.

Wood fumigation

Fumigation of wood is a method of disinfecting a tree where pests are or can be found. Thanks to this treatment, they are completely destroyed along with eggs and larvae. In addition, fumigation affects the decay of a tree.

When processing, fumigants are used - special tools that destroy pests. After processing, the required period is maintained and degassing is performed, after which the wood becomes completely harmless for further processing.

Wood fumigation is carried out:

1. for single structures (rafters, beams) in various buildings;
2. for wood for export;
3. during the construction of houses;
4. for wooden products, containers and the like.

Fumigation of wood is used to destroy pests in the tree itself, as well as to prevent infection. After a few years, houses, structures and wood products that have not been fumigated become infected with insects within a few years, they begin to rot and mold.Insects weaken the structure, because they eat materials from the inside.

Warehouse processing

Fumigation of warehouses refers to a method of disinfecting rooms and empty containers in which pesticides are sprayed in a gaseous state. Fumigations are subject to: feed mills, mill plants and combines, storage facilities for various purposes.

Fumigation is the most effective method of disinfecting warehouses and industrial premises. Processing tactics depend on the area and stored goods.

Fumigation makes it possible to rid warehouses of various pests, including pathogens, preventing their subsequent appearance. The procedure allows us to guarantee the safety and duration of storage of goods and products in warehouses.

Technologies for aeration of rooms, warehouses

The modern approach to disinfection today has indicated a rather interesting new direction - the treatment of areas, premises or areas affected by parasites or pests with the help of gasification.

And the reason for this is high performance indicators for the shortest possible time, ease of use and application of this technology, as well as acceptable environmental safety for people and animals.

What it is

The term gassing or fumigation are synonyms that indicate a method of killing pests with poison in the consistency of gas through special equipment - a fumigation machine.

Pests act in the form of insects or rodents that transmit to plants, crops or directly to humans, animals and birds all kinds of pathogens that provoke a number of dangerous diseases based on infections or viruses.

Usually, professional treatment with fumigation technology is aimed at the following types of objects affected by insects or rodents:

In addition, various plants are also being processed, for example, for the production of animal feed, some structures or the formation of production capacities for processing large quantities of grain, a workshop for processing basic raw materials in meat processing plants and other premises where various parasites and pests like to settle.

Processing process

The process of aeration or fumigation is carried out using special equipment and machinery, a fumigator machine, which is fueled by an active insecticide that infects pests. Most often, some special professional drug based on phosphine is used. The general front of the work of fumigation is the following tasks:

1. aerosol-gas attack of warehouses, storages;
2. fumigation of grain in motion on a conveyor belt;
3. fumigant disinfection of elevators, mills, bakeries or cereals;
4. processing by the generator of dispersion-condensed fog with gas of a loaded or empty warehouse, storage.

Usually, the processing time for new technology is from 2 to 7 days, depending on the area of ​​the room to be disinfected.

Phosphine Fumigation

Phosphine is a poisonous gas without color, but with the unpleasant smell of rotten fish.It is poorly soluble in water, but if a connection with water molecules has occurred, then phosphonium salts are formed.

The substance does not affect burlap, steel, tin, wooden objects, nor does it affect in any way tarpaulin, cotton or silk fabric.

The phosphine technology consists of the following activities:

If the gas concentration is very high, then it can cause corrosion of copper and copper alloys, brass, as well as a number of precious metals (gold, silver and others). Reacts with salts on the surface of a photographic film.

That is why phosphine is rarely used in rooms where there is electrical wiring, telephone and any electrical equipment, including computer equipment.

After fumigation, do not be afraid that the products are infected and are now useless. Phosphine very quickly erodes from products, grain, goods. It is noticed that he practically does not leave any traces.

Fostoxin

The main substance in this preparation is aluminum phosphide (57%) with inert formations up to 43%. The manufacturer produces "Fostoxin" in the form of capsules and tablets. It is believed that the substance in capsules is much more effective than using tablets because of the rapid exposure and decomposition of the active components.

Tablets are most often used to handle silos, bulk containers, and also holds in ships. The dosage of the drug is as follows:

At an air temperature of + 25 ° C, tablets can be used for up to 10 days, and capsules for up to 8 days. The price for packing tablets weighing 560 g / kg is 2300 rubles.

Magtoxin

The active substance in the drug "Magtoxin" is - magnesium phosphide. The effect of the substance is aimed at processing food, seed, feed grain, silos from elevators, as well as grain, packaged and packed in bags under a film.

The cost of fumigation by professional employees of disinfection services depends on the processing area. So the average cost for premises with various parameters is:

• 100 sqm - 3500 rub;
• 200-400 sq.m. - 4000 rubles .;
• 500-700 sq.m. - 4500 rubles .;
• 700-1000 sq.m. - 5000 rubles .;
• 1500-2000 sq.m. - 6800 rubles .;
• over 2000 sq.m. - individual calculations of the cost of services.

Grain fumigation - how important is it?

Every entrepreneur and farmer who grows crops sets as his goal not only to collect a high-quality crop, but also to keep it in good condition. However, non-compliance with the storage conditions of the crop often leads to spoilage, decay, as well as the emergence and development of pests that are dangerous to crops.

Today, fumigation remains one of the most effective methods of pest control, given the diffuse properties of gaseous substances.

Any storage facilities for grain crops (elevators, warehouses, food industry enterprises), transit facilities during transportation (containers, ship holds, wagons, etc.) are subject to fumigation upon detection of dangerous pests, in particular insects and ticks.

Indeed, these pests not only spoil the crop, but also significantly reduce its quality and quantity, which in the future can lead to economic losses of the enterprise.

Experts identify pests and determine the necessary fumigation regimes to achieve maximum efficiency of the above works.

Set of pest control measures

Fumigation is a complex of disinfection and disinsection measures that are aimed at the complete destruction of microorganisms, rodents and insects. Usually, in this way, cargo, ships, granaries are handled - enclosed spaces.

Where you can distribute the drug and completely exterminate unwanted organisms. Disinfected products such as fruits, vegetables, flour, grains.

How this method differs from other types

First of all, the difference is that the fumigant enters in the form of gas and therefore penetrates literally into any gap. At the same time, not only food products are processed, but also all materials, objects that are in the room.

The drug in a gaseous state is able to penetrate into materials to a great depth. Due to these features, the fumigation process leads to 100% destruction and purification from harmful microorganisms.

Objects of fumigation:

• Agro-industrial complex;
• Customs warehouses at border points;
• Means of transport;
• Goods for export;
• Wooden packaging;
• Fumigation of products in bags;
• Elevators, mills, flour mills, workshops, aircraft, ships, etc.

Processing Methods:

Processing chemicals

Methyl Bromide - Chemically pure methyl bromide is an odorless and colorless gas. The gaseous substance is almost 3 times heavier than air, which allows it to penetrate the cargo. A liquid substance is a good solvent for varnishes, oils, fats, coatings, so when working with this methyl it is impossible for it to come into contact with the above materials.

Methyl bromide is very toxic to all ticks and insects. They disinfect feed and food grain, grain products, feed raw materials and oilseeds, beans, peas, cocoa beans, nuts, coffee, raisins, figs, ginger, dates, etc. Sugar and tea can only be decontaminated if harmful quarantine is detected pests.

Fumigation with phosphine-based preparations - aluminum, magnesium phosphides. The main active ingredient is phosphine. Substances are capable of spontaneous combustion if they are in contact with drip and liquid moisture.

It does not destroy wood, tin, galvanized tin, steel, burlap, tarpaulin, but it causes the oxidation of copper objects. Therefore, it is impossible to process rooms where there is equipment, computers, technological equipment.

Phosphine-based preparations process dry cargo products. Planting material, developing plants, vegetables and fruits are not processed. Phosphine does not settle on products, but is easily degassed.