Limitations of Home Insect Foggers (“Bug Bombs”)
Total release foggers, also known as "bug bombs," are pesticide products containing aerosol propellants that release their contents at once to fumigate an area. These products are often used around the home to kill cockroaches, fleas, and other pests. Because the aerosol propellants in these foggers typically are flammable, improper use may cause a fire or explosion. In addition to this hazard, failure to vacate premises during fogging or reentering without airing out may result in illness.
"While foggers require little effort to use, they seldom resolve, and can exacerbate, indoor pest problems." - Michael F. Potter, Extension Entomologist
University of Kentucky College of Agriculture
Most foggers are designed to be placed in the center of a room on a chair or table, and activated by depressing or removing a tab at the top of the can. The entire contents are released upwards, into the airspace, where the aerosol droplets remain suspended for a period of time and then gradually settle onto floors, counter tops and other surfaces. Prior to application, drawers, cabinets and closets are supposed to be opened to enhance coverage in areas where pests are likely to be hidden. When applied in this manner, very little insecticide actually penetrates into cracks, voids, and other secluded locations where cockroaches, ants, bed bugs, and most other household pests congregate and spend most of their time.
"Questions have been raised about the effectiveness of total release foggers against bed bugs...Foggers should not be used as the sole source of bed bug control." - Epa.gov
While Bug Bombs can be effective at killing flying insects in an enclosed space, they will not prevent the resurgence of such pests. When used for almost any other pest, they are practically useless and often make the situation worse by causing the pests to scatter and spread to other areas. You will never see a Pest Management Professional treating any pest issue in this way.