Perhaps you have seen a large tent or tarp covering a house or other structure and wondered what it was. What you saw is evidence of termite tenting or fumigation, which, despite continued concerns, has been proven not to pose a risk to either humans or pets so long as the procedure is allowed to run its course undisturbed. Used for large infestations of dry wood termites, the treatment is quite expensive and this is why great care needs to be taken to verify that the structure to be treated has in fact been infested by a large colony.
Environmentalists deplore the use of fumigation as a pest control strategy against termite infestations. However, the process continues to be employed and some states even require it be done before a house can be sold. There are, despite its effectiveness, some limitations to its use. It is ineffective against subterranean termites. In addition, it has no effect on unhatched eggs — although some exterminators claim that since there are no workers alive to feed the nymphs, once they hatch they will starve to death. Further, this form of extermination does not prevent new colonies from taking up residence, especially after the early spring swarming season.
Once the tarp or tent is placed over the structure undergoing treatment, Vikane or sulfuryl floride is pumped throughout the structure. The gas penetrates the wood and reaches the colony destroying it and its residents.
A lot of preparation is required for this treatment to be effective and safe. Food, dishes, and cooking utensils need to be covered and properly stored and all pets removed from the premises. In addition, all residents will have to leave and remain gone for several days until the tent is removed and the all clear is given. Some of the stress and inconvenience of this preparation can be lessened by making a vacation out of the time away from home or using it to visit near and dear relatives. The gas used is odorless and tasteless and does not leave a residue behind which makes it safe for humans and animals.
Given the extensive and time consuming preparations needed to use fumigation, as well as its cost, and environmental concerns, some experts say it should be used as a last resort. However, some states mandate that it be used as a first choice and so those faced with a dry wood termites infestation will want to consult with several experts in pest control to decide how best to proceed.
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