Star brite Smoke Odor Eliminator - Restores Indoor Air Quality Chemically breaks down and eliminates residual odors caused by smoke, in enclosed spaces Contains 1 - 10 gram ClO2 generating pouch, with quick release activator sponge Dual action as either a fast release or slow release application Does not leave residue after treatment and no masking perfumes or scents Removes cigarette, cigar, pipe and marijuana odor