Crystal Lye Drain Opener, Cleaner Type Septic System, Container Type Bottle, Container Size 1 lb, Cleaner Form Beads, Septic System Safe Yes, Garbage Disposal Safe No, Fragrance Unscented, Product Label Crystal Lye Drain Cleaner, Product Series No Series, Ready to Use/Concentrated Ready to Use, Standards OSHA, Biodegradable No, Color White, Compatible Pipe Material Plastic, Metal, Maximum Set Time 30 min, Minimum Set Time 15 min, NSF Rating Not Rated, Primary Chemical Crystal Lye