Sanitize vs disinfect
Disinfecting uses chemicals (disinfectants) to kill germs on surfaces and objects.
Disinfecting does not necessarily clean dirty surfaces or remove germs. Sanitizing could be done by either cleaning, disinfecting, or both. Sanitizing means that you are lowering the number of germs to a safe level.
The technicians use a fogger to apply the sanitizer and due to the negative air pressure, it coats the entire interior of the duct system. The product has no lingering scent and is safe enough that it is used in hospitals.
Sporicidin Disinfectant is an EPA-registered one-step cleaner disinfectant. It is bactericidal, fungicidal, virucidal (both enveloped and non-enveloped viruses) and tuberculocidal solution that is safe to use in a variety of cleanroom environments.