10% larger than leading competitors. Fragrance is gradually released over 30 days, 10 times more fragrance than a vinyl urinal screen. No ozone depleting ingredients. 1/10 the VOC's of most aerosols. Revolutionary design reduces splash back while optimizing fragrance release, cutting cleaning time in half. Releases optimized bacteria that cleans the urinal and eliminates odors, shrinks the size as it releases beneficial bacteria and fragrance.