Mr Muscle Probiotic Drain Cleaner uses Probiotic Cleaning Power to eat the odour causing gunk in your drains. The innovative formula is safe for use on all pipes, and leaves drains smelling citrus-fresh. Mr Muscle Probiotic Drain Cleaner is perfect for use on slow running and odour ridden drains. DIRECTIONS: Start-Up Treatment: For Drains; Run warm water for one minute. Turn off water and pour 1/2 of the bottle (250ml) into the drain. Briefly run WARM water again (approximately 500ml). Avoid running water for 6-8 hours*. For Slow-Running Toilets: 1. Flush 1/3rd (166ml) of the bottle down the toilet 3 consecutive days. 2. Don't flush for 6-8 hours* after initital treatment. *Itmay be easiest to treat before going to bed or work. On-going Treatment: Pour 1/4 (125ml) of the bottle down each drain and 1/3rd (166ml) down each toilet every 2-4 weeks. NOTE: Initial use may cause loosened build-up to slow or, in rare cases, block the flow of water. Don't worry - thismeansMrMuscle Probiotic Drain Cleaner isworking to remove build-up, simply plunge and repeat the treatment. For best results: Clear pipes of any clogs before treating withMr Muscle Probiotic Drain Cleaner. Use as directed: This product will not open clogs. For clogged drains, try Mr Muscle Drain Gel. Do not reuse the package. Ingredients: Contains: <5% phosphates; <5% Anionic surfactants; Also contains: enzymes; perfume. Warning: Keep out of reach of children. IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. Wash hands thoroughly after handling.