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Fumigation

Albion St Fume

Since 1961, the law requires that, on completion of a fumigation, the fumigator must post a sign with the name of the licensee, the date of the fumigation, and the fumigant used. The sign must be posted either in the attic or in the subarea of a house. These tags are to remain permanently and should not be detached. What preparations must be taken before a house is fumigated? All people, pets and plants must be removed from the structure before fumigation. (This includes fish and seeds or bulbs intended for planting). Medicines, feed and food not sealed in metal, glass or highly resistant containers must be removed from the structure or sealed in protective bags as recommended by the fumigant manufacturer.

Structural fumigants are odorless. Therefore, fumigators are required to release a warning agent such as chloropicrin (tear gas) within the structure when the fumigation begins and throughout the fumigation process. When drywood termites or wood-boring beetles are found, must the structure always be fumigated?

Fumigation is not always a required method of treatment for drywood termites and wood-boring beetles. Fumigation is an all-encompassing treatment in which the gases permeate the entire structure, eradicating both visible infestations and termites that are otherwise inaccessible. If an infestation is contained in a small area, the termites or beetles may be eliminated by local applications. The inspector will use their professional judgment to decide what treatment is necessary. If treatments other than fumigation are recommended, you should be aware the localized treatments will not provide eradication of other hidden infestations in the building.

Subterranean termites require separate treatments to create a barrier between the structure and their nest in the ground. Under ideal conditions, the target pest will be dead or obviously dying by the end of the fumigation. Drywood termites can remain alive as long as a week after receiving a lethal dose of a fumigant. Lethal doses vary for different pests, depending on the fumigant used. It is possible for household pests (such as spiders or cockroaches) to survive a fumigation with the dosage used for drywood termites.
NOTE: Reinfestations of the target pest could occur following a fumigation. Drywood termites and some wood-destroying beetles produce small pellets or dusts that remain in the tunnels after the insects are killed. You may continue to notice these signs after a fumigation. This does not necessarily mean the fumigation failed.