Eco Bowl Clip Air Freshener, Cotton Blossom Scent, Blue Colour, Package of 12 Freshens the air for 30 days or more Unique patent-pending material contains 30 times more air freshener than standard rim sticks Environmentally Friendly; low VOC’s 100% recyclable; will not dissolve in or pollute water Fits most standard toilets; clips on outside of bowl Also clips on toilet tank, bathroom partition, etc.