Big D€™s little wick-equipped Industrial Deodorant has been keeping rooms odor free for over 40 years! This oxidizing deodorant works wonders in public restrooms, sick rooms, rooms smokers use, and little used or musty rooms. Big D€™s Industrial Deodorant can eliminate any odor from the source through a catalytic reaction which oxidizes odors wherever they meet.A 1.5 oz. bottle of Big D will last up to 45 days, depending on the ventilation conditions of the room. Where air movement is bad, it may be used in a motorized dispenser. The wick will remain wet as long as there is liquid in the bottle (and wick is not extended beyond the recommended height). The special plastic cap provided with each dozen ordered makes it possible to use the product as drops, directly on a source of odor, without spillage.