Roach foggers are often a last resort for roach killing for those who have tried other methods and have been unable to control their roach problem. The fogger disburses roach spray into the air at a rapid rate in order to fully cover a specific area. Each roach fogger has its own square footage limitations. They may be good for only a few hundred square feet or they may be able to cover 1,000 square feet or more. The poison that is released by a fogger will find its way into the crevices around the room, and this can be extremely effective against a serious roach infestation.
A roach fogger is an effective way to distribute poisons around a home, and therein lies the danger of them. The EPA recommends that foggers not be used too often and that precautions should be taken each time they're used. The vapors that are released from a bug fogger are flammable, and this has lead to many household accidents. To keep a room from building up too much vapor, carefully choose the fogger that is best for the square footage of the room that it will be used in. Using too powerful a fogger in too small a room can lead to an excessive buildup of these chemicals.
The EPA recommends that a bug fogger should be placed at least six feet away from any ignition source. These include pilot lights, an open flame and electrical appliances that can create a spark. To keep the risk of injuries and harmful exposure to people in the household, set off a roach fogger only when everyone is away from the home. The home should remain empty for a few hours. Most foggers recommend that everyone stay out of the home for three to four hours after it has been activated. After this period of time, open the doors to ventilate the home before entering it.
A good use for a bug fogger is to use it in an attic or basement that has a roach infestation but that doesn't have people in it regularly. Another is to use it in outdoor storage areas that aren't inhabited.