Antimicrobial pesticides are substances used to kill harmful microorganisms or inhibit their multiplication or growth. It is called as pesticide because it has pesticide ingredients and does not have any other indication but for pesticide use only. To be able to sell and use antimicrobial pesticides, it has to be registered by EPA. When used for air duct cleaning, it should specifically indicated in the product's label that is approved for HVAC unit cleaning. For air ducts, its primary purpose is to inhibit microorganism growth of your HVAC component's hard surfaces, such as duct interiors, fans, and air handlers. The specific direction for use in the product's label should be followed strictly. Its method of application is by wiping, fogging, or spraying. Antimicrobial pesticides should be applied only after the Dryer vent cleaning Irvine and its components are thoroughly cleaned. Remember, however, that overusing of these chemicals can cause unwanted exposure to possibly harmful chemicals.