Another valuable asset we offer, after the HVAC system has been cleaned is anti-microbial fogging. The name of this service is impressive, but the service itself is quite simple. A small chemical fogger is used to introduce chemicals into the ductwork system, chemicals that sanitize germs, bacteria and fungus. EPA-registered chemicals specifically for use in ductwork systems are available that do not require the evacuation of family members and pets from the occupied space while the chemical is being used.