Structural Pest Management Bulletin 512 How to Use Pesticides in the Home Many pesticide formulations are on the market today. It would be an illegal use, and perhaps cause injury to the amateur applicator. Several pesticides, or some of their formulations, may be taken off the market, or they may be restricted to certain uses or to certified applicators. Therefore, always read the label of the pesticide product before you use or purchase it. There are several ways pesticides are formulated for sale.
Dusts are dry powders ready for use.
Wettable powders, soluble powders and emulsifiable concentrates all can be mixed with water, but the percentage of the pesticide varies greatly. Aerosol sprays contain one or more pesticides in a solvent and a propellant gas. These applicators produce a fine mist or spray. The active ingredient is usually a very small percentage of the spray. Aerosol sprays having an oil base can cause staining.