* 100% Biodegradable in 21 Days! * Natural Hypoallergenic * Non-Toxic * No Perfumes * Helps Eliminate Static Cling * Softens and Freshens Clothes * Cleans Better. Naturally. Sun & Earth Fabric Softener Sheets are made with a vegetable derived softening agent and a neutralizing odor control. Our sheets are certified tested using ASTM D 2020-92 method B, verifying complete compostability. Soil burial tests results showed Sun & Earth Fabric Softener Sheets totally degraded in 21 days. Our Products Work as Well as the Leading Brands without Harsh Chemicals. Our sheets are not tested on animals and are made from 100% renewable resources.