Bio-Pure All Natural Sunless Booth Sump Pump & Drain Cleaner / 14 oz. Bio-Pure is an all Natural, Dual Action Cleaner that Breaks Down & Digests Organic Waste in Drains, Septic Treatments & Sump Pumps. Prevents drain Backup & Foul Odors, desolves and degrades Heavy Concenations of Organic Matter within the Sump Pump. In 3 Days, improvement in Sump Pump Flow. Listed as FDA GRAS completely safe for Humans, Animals and Plants. 2-3 Hours, Odors will be Gone!