The appearance of uninvited guests in food storage areas is not just a nuisance, but a serious threat to the health of the whole family. Cockroaches in the refrigerator they can settle in the thermal insulation layer or in the control unit, where low temperatures do not penetrate. Ignoring the problem will lead to the rapid spread of the colony throughout the kitchen.
Many equipment owners mistakenly believe that the cold inside the chambers kills insects, but this is not so. Pterygota (winged insects) and their wingless relatives hide in the engine compartment or behind the panels, where the compressor operates and heat is generated. To get rid of the scourge forever, you will need an integrated approach, including mechanical cleaning and chemical treatment.
In this article we will look at why pests choose your equipment, what means are most effective and how to carry out disinfestation without damaging the electronics. The temperature in the freezer below -18°C does not kill cockroach eggs if they are in a state of suspended animation. Therefore, simple defrosting will not solve the problem radically.
Reasons for the appearance of insects in technology
The main factor that attracts Prussians to refrigeration equipment is the presence of warmth and secluded places. In the engine compartment, located at the back or bottom of the unit, the temperature is always above room temperature, which is ideal for overwintering the colony. In addition, door seals are often saturated with food odors, becoming a magnet for hungry individuals.
Another reason is pollution of the drainage system. If condensation with organic particles accumulates in the drain hole, this creates an ideal environment for the growth of bacteria and attracting insects. They can penetrate inside through technical openings or migrate from neighboring apartments through ventilation shafts.
Sometimes the source of the problem is products brought from the store. Packages of cereals or vegetables may contain clutches of eggs, which are then transferred to the warm zone of the refrigerator. It is important to carefully inspect your purchases before storing them.
⚠️ Attention: If you live in an apartment building, treating only one refrigerator may be useless. Insects may return from neighboring rooms or communal communications.
It is also worth considering the condition of the kitchen as a whole. The presence of open trash cans, crumbs behind baseboards or running taps creates favorable conditions for pests to live near equipment.
Preparing the refrigerator for disinfestation
Before starting active operations, it is necessary to properly prepare the unit. The first step is to completely empty the chambers of food. All perishable items (perishable goods) must be packed tightly or temporarily moved to another cold place.
Next is defrosting. Even if you have a No Frostsystem, you must disconnect the device from the network for at least 12–24 hours. This will allow the ice in the evaporator to melt and open access to hidden cavities where insects can hide.
☑️ Preparation for processing
After defrosting, remove all removable elements: shelves, containers, egg trays. It is better to take them out onto the balcony or street to wash with hot water and disinfectant. Pay special attention to the rear wall where the compressor is located.
To access the internal components, it may be necessary to remove plastic panels. Use a screwdriver with a suitable slot to avoid damaging the latches. Mechanical cleaning A vacuum cleaner will help remove adult pests and visible masonry from hard-to-reach places.
Effective means for pest control
The choice of control method depends on the degree of infestation and the presence of children or animals in the house. Chemical preparations are divided into contact insecticides, bait gels and aerosols. Gels are the safest for refrigerators, since they are not sprayed into the air.
Gel baits operate on the principle of a chain reaction: the insect eats the poison, returns to the nest and infects its relatives. Popular brands include Globol, Dohlox and Raid. They should be applied dotted in habitats, but not on products.
Aerosols, such as Dichlorvos or Raptor, give an instant effect, but require careful ventilation. They are best used for treating the external engine compartment, where air from the chambers does not enter.
| Type of product | Examples | Safety | Speed of action |
|---|---|---|---|
| Gel baits | Globol, Advion | High | 3-7 days |
| Aerosols | Clean House, Raid | Low | Instantly |
| Crayons | Mashenka | Medium | 1-2 weeks |
| Folk methods | Boric acid | High | 5-10 days |
Folk methods also show high efficiency. A mixture of boric acid with egg yolk or powdered sugar is a classic, proven for decades. Boric acid destroys the chitinous cover of the insect and causes dehydration.
Danger of traditional methods
Use Using kerosene or turpentine to treat the refrigerator is strictly prohibited. These substances leave a persistent odor that is absorbed into plastic and rubber seals, and the products will have a chemical taste for a long time.
Step-by-step processing instructions
The destruction process must be carried out in stages to cover all possible locations. Start from the outside: turn the refrigerator over (carefully, maintaining an angle of no more than 40 degrees so that oil does not get into the compressor) and treat the back panel.
Apply the selected product around the compressor, in the places where the wires exit and near the start relay. If using a spray, allow it to dry before using. After thorough washing, the internal chambers can be treated with a weak solution of vinegar or special wipes.
It is important not to forget about the drainage hole. It can be cleaned with a brush and filled with a small amount of safe insecticidal gel to block the migration route from the sewer. Wipe the door seals with alcohol or vodka - this will degrease the surface and remove attractive odors.
⚠️ Attention: When using sprays inside the chambers, make sure that the substance does not get on the ventilation system No Frost. Otherwise, the chemical will spread throughout the entire volume when turned on.
After treatment, leave the doors open for several hours to remove odors. Then assemble the structure, turn on the device and run it idle for 2-3 hours before loading the products.
Safe folk recipes
If there are allergy sufferers or small children in the house, chemistry may be undesirable. In such cases, natural repellents come to the rescue. Essential oils of mint, geranium or eucalyptus repel insects with their smell, although they do not kill them.
Pyrethrum powder (dried chamomile flowers) is a safe insecticide for people and animals. It can be scattered in a tray under the refrigerator. Pyrethrum paralyzes the nervous system of insects, but quickly decomposes in the light.
Another method is the use of traps. A jar with beer or sweet water poured inside and the edges greased is placed next to the equipment. Insects, attracted by the smell, crawl inside, but cannot get out due to the slippery walls.
Prevention of reappearance
To prevent the problem from returning, it is necessary to maintain cleanliness not only inside the chambers, but also around the unit. Regularly wash the floor behind the refrigerator, remove crumbs and dust. Kitchen hygiene is the main enemy of cockroaches.
Check the integrity of the seals. If the rubber is cracked or does not fit well, insects will easily get inside. Timely replacement of the sealing gum will maintain tightness and protect against pests.
Periodicly, once every six months, carry out preventive treatment of the rear panels with bait gel. This will create a protective barrier. Also make sure that the trash can is tightly closed and that food in cupboards is in containers.
Collective struggle is effective in apartment buildings. If you poison insects only in your own home, they may temporarily go to your neighbors and then return. Concerted actions of residents produce long-term results.
Frequently asked questions (FAQ)
Is it possible to freeze cockroaches out? leaving the refrigerator on the balcony in winter?
Theoretically, temperatures below -10°C kill insects, but this is risky for the refrigerator. The oil in the compressor thickens, the plastic becomes brittle and may crack. In addition, cockroach eggs can survive short-term cooling in a state of suspended animation.
Is it safe to use Dichlorvos inside chambers?
Using conventional aerosols inside chambers is highly not recommended. Toxic substances settle on the walls and can get into food. If the situation is critical, use only specialized products labeled “safe for food premises” and wash the surfaces thoroughly afterwards.
Why do cockroaches climb into the refrigerator if it’s cold there?
They climb not into the freezer, but into the technical compartment where the motor is located. It's warm and dry there. They are also attracted by the smells of products penetrating through loose seals and moisture from drainage.
How often should you change the gel against cockroaches?
The gel loses its properties after 2-3 months, especially if it is dry or dusty. For prevention, it is recommended to update the bait once a quarter, even if no insects are visible.