The Works Drain Opener is a professional-strength formula that opens clogged drains fast!The Works Drain Opener attacks clogs and dissolves hair, soap scum, lime scale and other hard water deposits to open your drain and restore it to its natural, free-flowing state. Use it in sinks, bathtubs, plumbing and septic systems. To prevent clogs, use The Works Drain Opener monthly to keep your pipes clear of unnecessary buildup and rid of odor-causing clogs. As opposed to expensive and time-consuming professional services, use The Works Drain Opener. It is quick, easy to use, and priced at a value to save you time and money! *Directions: To open cap, push down while unscrewing. To lock cap after each use, push down and screw tightly. Pour 16oz of product directly into drain. Follow with 8 oz of cold water. Allow to work at least 15 minutes. For tough clogs, allow to work for 30 minutes. Flush with cold water. Repeat all steps if necessary. DO NOT MIX WITH ANY OTHER HOUSEHOLD CHEMICALS, ESPECIALLY CHLORINE-TYPE PRODUCTS OR OTHER DRAIN OPENERS AS HAZARDOUS GASES MAY OCCUR. *Read entire product label before use.