The P-Wave Bowl Clip is engineered to effortlessly clip over the exterior of toilet rims (underneath the seat) but can also be placed virtually anywhere for air freshness. The clip has no need for batteries, electricity, or harmful aerosols, offering a strong fragrance that lasts for up to a month. Perfect for toilet bowls, office privacy screens/dividers, cars, or even hanging over a door. Providing up to 40 times more fragrance than a conventional toilet rim stick, this versatile clip is supplied in a pack of 12.