Rodent Fumigation

What is Fumigation?

Fumigation is a method of pest control that completely fills an area with gaseous pesticides or fumigants to suffocate or poison the pests within. It is used to control pests in buildings (structural fumigation), soil, grain, and produce, and is also used during processing of goods to be imported or exported to prevent transfer of exotic organisms. This method also affects the structure itself, affecting pests that inhabit the physical structure, such as rodent and drywood termites.

Rodent fumigation method have been used by homeowner or pest expert in order to make rodent free-house. It is one of pest control method that can kill rodent instantly.


Rodents living under grain bin floors and in warehouses are looking for food and harborage. A warehouse with bagged seed or processed food is ideal for the survival and population growth of the second most successful mammal on this planet. Damage caused by rodents comes in various forms. Mice can chew the bags or packaging material to use for nesting material. Mice leave many unsightly fecal pellets on clean bags. They urinate thousands of times a day leaving a faint yellow stain on the bags causing a distinct pungent odor in the warehouse and under the floor of a grain bin. This odor is often detected by the customer. Some rodents can cause health problems. Rats can carry fleas that cause diseases like the Black Plague.
Rodent control is very important in order to avoid health risks. There are many effective ways for controlling rodent population.  One of the method is rodent fumigation. It is an effective ways that can help to kill rodent and decrease its existence.
Besides property damages, rodents are also known to spread diseases like leptospirosis and salmonellosis. Don’t take chances with rodents, contact us today.

Rodent Fumigation

  • > Fumigation can kill both rats and fleas
  • > Some of the commonly used fumigants are:
    • - calcium cyanide (cyanogas)
    • - methyl bromide
    • - carbon disulphide
    • - sulphur dioxide
  • > calcium cyanide can be used to fumigate rat burrows
  • > It is prepared in powder form and pumped into rat burrows using ‘cyanogas foot pumps’
  • > The opening is then sealed
  • > Cyanogas powder on contact with moisture gives off hydrogen cyanide gas which is lethal to both rats and fleas
  • > Care should be taken during fumigation as exposure is hazardous to humans and other livestock

Fumigation Safety

Inhalation is the most dangerous and common route of exposure to fumigants. Most are highly toxic so breathing even small amounts can cause serious illness or death. Exposure also can occur thorough your eyes, mouth, or skin. The label will list the personal protective equipment (PPE) that the manufacturer requires. Know what to do in case of an exposure.

Mild inhalation exposure can cause a feeling of sickness, ringing in the ears, fatigue, nausea and tightness in the chest. Exposure to fresh air will usually relieve these symptoms.

Moderate inhalation exposure can cause weakness, vomiting, chest pain, diarrhea, difficulty breathing and pain just above the stomach.

Symptoms of severe inhalation exposure may occur within a few hours to several days after exposure. Severe poisoning may result in fluid in the lungs. This can lead to dizziness, blue or purple skin color, unconsciousness, and even death.

Do not attempt to rescue someone in an enclosed area if you are not wearing the proper respiratory protection.

Fumigation Process

Fumigation generally involves the following phases: First the area intended to be fumigated is usually covered to create a sealed environment; next the fumigant is released into the space to be fumigated; then, the space is held for a set period while the fumigant gas percolates through the space and acts on and kills any infestation in the product, next the space is ventilated so that the poisonous gases are allowed to escape from the space, and render it safe for humans to enter. If successful, the fumigated area is now safe and pest free.

Advantages of Fumigation

Proper use by highly trained, licensed fumigators is essential.

Fumigants can:

1) quickly eradicate arthropod and/or rodent infestations in commodities and structures.

2) penetrate cracks, crevices, and some packaging materials that may limit the effectiveness of insecticide sprays and dusts to control pests.

3) leave no unsightly, odorous, or hazardous residues if the site is aerated properly.

The ideal fumigant should not change or harm the treated commodity in any way, nor should it leave any residue that could be hazardous during processing or harmful to the consumer.

Tolerance level is the amount of pesticide residue that may legally remain in or on agricultural products after treatment and aeration. Follow the label to be sure fumigant residues never exceed those levels.

Disadvantages of Fumigation


1) are highly toxic to most living things, including humans. Breathing even small amounts of some fumigants can be fatal. There must be a quick response to problems and emergencies such as spills, leaks, or equipment failures.

2) require special protective equipment: self-contained breathing apparatus (SCBA) and gas detectors.

3) require tightly sealed areas. Leaks can allow fumigant concentration to drop below lethal levels before the required exposure period has elapsed.

4) some products are corrosive or flammable.

5) often require warm temperatures to be effective. This may be a problem in the winter.

Fumigation is time-consuming and expensive. The process usually requires more labor than other pest-control methods. Structural fumigation is disruptive because it requires that tenants / occupants leave. The special hazards and conditions of fumigation necessitate strict legal restrictions and regulation.