The Curve was designed with efficiency in mind. The date tabs show when it's time to replace and the compact size contains 50-100 times more fragrance than a standard rim stick. The Curve allows you to place freshness right where it's needed. It's perfect for inside cupboards, near toilets, or even inside trash cans. Eco-friendly. With no stick residue, the Curve is 100% recyclable and doesn't contain acetone or propellants.