Smelleze® eliminates tough odor without masking with harmful fragrances & cleans your air. Simply place in area with odor or air duct & smell the difference. Odor & pollutants just don't stand a chance! It's the only trusted eco-friendly, recyclable, non-toxic, odorless & natural deodorizer that's also reusable. Has a proven track record for improving indoor air quality for 20+ years & is beneficial for people with chemical sensitivity.