Fumigation Pest Control
Fumigation pest control uses toxic gases to control pests in enclosed spaces, structures, commodities, or vehicles. The exam tests sealing, monitoring, placarding, PPE, aeration, reentry, and calculation of cubic footage and dosage.
Core rules
- Fumigants are highly toxic gases; only trained, certified applicators with the right equipment and label authorization should use them.
- Seal the space before release; leaks endanger occupants and neighbors. Post warnings and restrict access.
- Use monitoring equipment and appropriate respiratory protection, including SCBA when required; never enter without monitoring and a standby person.
- Calculate cubic footage accurately and follow label dosage for temperature, commodity, and target pest.
- Ventilate and verify clearance before reentry; do not rely on odor or time alone.
- Follow buffer zones, occupant notification, placarding, and state and federal requirements.
Worked example
A structure is 40 ft by 30 ft by 10 ft = 12,000 cubic feet. Label dose is 10 oz product per 1,000 cubic feet. Product is 12,000 divided by 1,000 times 10 = 120 oz = 7.5 lb. Reasoning: cubic footage scales the dose; irregular spaces should be divided into measurable blocks and summed. Confirm the label dose for the specific fumigant, temperature, and target.
Traps
- Entering without monitoring or SCBA because the space smells clear.
- Failing to seal or discovering leaks after release.
- Using a structural dose for a commodity or vice versa.
- Releasing occupants too early or skipping clearance testing.