This powerful air freshener works well in ladies' restrooms, lobbies, conference rooms, nursing stations, offices, kitchens, bathrooms, and more. It contains 50-100x more fragrance than a standard toilet rimstick and consistently releases pleasant fragrance over the course of 30 days. The Curve comes with a plastic holder that sticks to any flat surface and doesn't need to be replaced once it's installed. An easy reminder system lets you know when to replace the air freshener; simply remove the tabs upon installation to set your replacement date.