Are you an apartment manager or used car sales manager?
It's really hard to cover up the smell of:

Cigarettes, Chemical Odors, Diesel Fuel Odors, Animal Odors, Mold and Mildew, Food Odors, Spilled Milk Odors and Bacteria with chemicals that sometimes smell worse than the problem. You can eliminate these odors in vehicles or apartments in 1-8 hours, depending on contamination level. Not labor intensive, very cost effective. Just plug it in (120 V outlet), place it in the apartment or vehicle from seat, close doors and windows and let it run.

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