Extended Comments: 12/case a semi-solid gel containing activated charcoal, humectant and reagents which adsorb,neutralize and alter undesirable odors and fumes. It is designed for continuous use, is non toxic, non flammable, environmentally safe and easy to apply. Bas can be placed inside air handling equipment to adsorb and neutralize odors as product is dispersed and circulated throughout an entire building. Or place bas in affected areas for odor remediation. The bad air sponge reduces in size as it reacts with airborne odor causing compounds. Bas will last 30 to 150 days based on product size loading. The residual material is both ph balanced and 100% biodegradable. This product has been used in central air systems as an odor adsorbant for 50+ years and *** no known instance of allergies or sensitivities have been reported or recorded. Odor removal & air freshener load recommendations light odors: 1lb. Per 400 sq.ft. Or ton of a/c or 350 cfm of fan capacity to freshen the air. Medium odors: 2lb. Per 400 sq.ft. Or ton of a/c or 350 cfm of fan capacity to freshen the air. Heavy odors: 4lb. Per 400 sq. Ft. sq.ft. Or ton of a/c or 350 cfm of fan capacity to freshen the air. Directions for effective odor removal to activate product remove lid and place; 1) inside the supply air plenum (area behind air filter) and in front of the coils of your system, 2) inside supply air ducting; or, 3) in any affected area. For maximum effectiveness eject bad air sponge× onto lid, removing container. *** ingredients: ethanol (100ppm), soap, sodium salt, emulsifier, 1,2 propanediol, essential oils, water. 02/07/11