NILodor ULTRA Air Clips in Cucumber Melon deliver 30 times more fragrance than traditional rim sticks. Each clip attaches to the outside of the toilet bowl or the side of the tank, staying discreetly out of sight while it works. They are an environmentally and VOC friendly alternative to traditional para block deodorizers, contain no ozone-depleting ingredients, and are compliant in all 50 states. Sold 12 clips per case.