This is truly the highest quality, most effective smokeless ashtray. It uses an advanced Japanese design, which draws the smoke through two replaceable carbon filters located inside the ashtray. It''s super quiet, and eliminates the smoke, smell, and ash dust. If you smoke, live with someone who smokes, or smoke and live with someone who doesn''t smoke, this is a must have. Keep the smoke out of the air, off furniture, clothes, pets, your own face, and other people.