CLR Air-Pressure Drain Opener is an instant drain opener with a refreshing deodorizing lemon scent that effectively clears obstructed and slow-moving drains without the use of harsh acids or lye. This powerful solution works on kitchen and bathroom sinks, bathtubs, and laundry tubs by removing obstructions caused by hair, soap build-up, and grease in seconds using a controlled amount of pressure. It is safe for sound plumbing and can be used with septic systems, ensuring reliable performance without damage. The 4 oz. can provides up to 15 one-second applications, making it a convenient and efficient choice for maintaining clear drains. Model Number: PP4-5