ECOS Pro OxoBrite Oxygenating Whitener and Brightener Powder, 8.5 lbs., An effective alternative to chlorine bleach. When activated by water, the powder releases oxygen which penetrates the molecules of the staining substance, causing the stain to disappear without the use of optical brighteners. Can be used to clean in a variety of applications, as a laundry pre-soak, laundry whitener, laundry booster, carpet spot remover, pre-soak for dishes or dishwashing booster and to clean bathroom grout, garage floors and much more. Color-safe and compatible with high-efficiency machines, ECOS Pro OxoBrite is effective against oil and water-based stains and effective in all temperatures. It's readily biodegradable, pH balanced formula is made using sustainable ingredients. Free of synthetic perfumes and dyes, greywater and septic safe.