Tub O’Scrub Hand Cleaner, 0.5 gal Net Content, Bottle Container, Liquid Form, Mild Citrus Odor/Scent, White, Compositions: Ethoxylated Linear Alcohol, Walnut Shells, 7.5 pHUnique biodegradable formulaWalnut shell formula will not block drains or septic tank systemsOther formulas contain low cost pumice that can clog drains or septic systemsWalnut shells completely sanitized and safe for usePetroleum distillates can be harmful to water and septic systemsSpecial formula doesn’t irritate skinLanolin, aloe vera and vitamin E among other emollients that leave hands soft and moisturized after use