
Clog-Free Drain
- Unclogs drains in seconds.
- Clears even the toughest clogs instantly and will not harm sound plumbing.
- Contains up to 15 applications in each can.
- Environmentally safe, non-toxic and contains no harsh acids, additives, lye, or CFC’s.
Look for CLR Clog-Free Drain in this size
- 4.5 oz. can
More information
How to use this product
- Fill sink with enough water to submerge can’s cap.
- Block overflow with damp rag or sponge and hold firmly.
- Place can’s cap over drain opening and press firmly for one second. Repeat if necessary.
Slow-Moving Drains
- Place stopper in drain.
- Fill sink or tub with 6-7” of water, remove stopper.
- Block overflow with damp rag or sponge and hold firmly.
- Place can’s cap over drain opening and press firmly for one second. Repeat if necessary.
Double Sinks
- Place stopper in sink and hold.
- Follow the same directions as a blocked sink.
Product ingredients
This product was determined not to be Subject to Dislosure under the California Cleaning Products Right to Know Act.

1,1-Difluoroethane |
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A colorless gas used as a propellant for aerosol sprays and in gas duster products. As an alternative to chlorofluorocarbons, it has an ozone depletion potential of zero and a lower global warming potential. |
FAQs
How does CLR Clog-Free Drain work?
CLR Clog-Free Drain is a compressed gas. When the formula in the can is released and comes in contact with water in your drain, it expands rapidly, creating a standing wave. It uses the water in your pipe as a battering ram pushing the blockage through and cleaning the walls of your pipes.
How many applications are in a can?
There are up to 15 applications in one 4.5 oz. can of CLR Clog-Free Drain. Do not hold down can for more than 1 second. If you push down longer then less will be available for use.
What kind of clog will CLR Clog-Free Drain work on?
CLR Clog-Free Drain will work on any clog, including hair, grease, food particles and soap build-up.