According to the U.S. Environmental Protection Agency (EPA), studies suggest that 80 percent of most people’s exposure to pesticides occurs inside homes and that an increase of up to a dozen pesticides have been found in the air indoors.

The amount of pesticides found in homes can be caused by contaminated soil or dust that floats or is tracked in from outside, stored pesticide containers, and pesticides applied indoors. Some health effects can include irritation to eye, nose, and throat; damage to central nervous system and kidney; and increased risk of cancer. Symptoms may include headache, dizziness, muscular weakness, and nausea. Go to the EPA web page on Pesticides.