Cigar and cigarette smoke causes drapes, upholstered furniture, rugs, clothing and hair to smell of stale smoke long after you've put it out. The Smokeless Ashtray with a four-stage smoke filtering system lets smokers and non-smokers experience cleaner home environments and fresher air. But your Smokeless Ashtray will only work as well as your filters allow. By replacing old filters with these new ones, you'll continue to experience a fresh, clean environment. Two filters per pack. Buy extras to keep on hand