Foggers are a form of pest control that releases a mist of pesticide into the air. The chemicals present in foggers are able to kill pests, but usually do not penetrate into crevices where roaches hide. Cockroaches also have demonstrated resistance to the active ingredients in foggers and may not die from the exposure.
Fogging products can damage furniture and fabrics if not administered correctly. They also pose health risks to pets and humans. Furthermore, at high-enough concentrations, such as those risked by incorrect placement within the home, the aerosol mist can be flammable.
For the most effective management of roaches, contact a local pest control professional.