Freshens the urinal for 30 days. Reduces cleaning time - new & improved longer protrusions help reduce urine splash. Eliminates odors - Releases billions of optimized bacteria that clean the urinal and eliminate odors. Out indicator - Simply pull off the date tabs upon installation to remind you when to change the air freshener. Recommended by the #1 manufacturer of waterless urinals, Falcon Waterfree Technologies. Sold by the Box or Case. 10 screens per Box. 6 Boxes per Case. Available in scents Cotton Blossom, Cucumber Melon, Fabulous (Lavender), Herbal Mint, Ocean Mist, Mango, Spiced Apple.