CRETE Urinal Drain Cleaner, Commercial Grade, 16 oz, Restores Pipes to Original Diameter, Urinal Descaler & Odor Eliminator, Safe for Pipes, No Harsh Fumes, Urine Salt Remover

This potent smelly acid cleaned the line surprisingly fast. I guess after 5 years stuff builds up. Who knew? I might be using it once each year or two...

After using twice we still have the same issue

I am beyond impressed. My urinal was clogged for over a month! I tried all the drain cleaners possible with no success, then I heard of Crete. I put it in my urinal and the liquid initially sat in the urinal. I came back 45 minutes later and it was all in the drain. I flushed 12 hours later and the clog is completely gone!! Thank you

Liked the results.

Had a clogged urine, cleared after leaving product in overnight. Must clear as much water as possible before pouring in. Super easy to use and clean up

was a waste of money as didnt work

This product really worked; put in the full 16 oz. as stated. Left it in overnight 14 hrs. And it dissolved all the crud. Urinal looks brand-new; and no odor

I ordered Crete for a urinal that was draining slowly. I purchased a total of 4 quarts.The first quart I used - nothing really changed. Waited a day and I tried another quart. There was some marginal improvement (I would say about 30-35% better).I waited a week and then tried the 3rd quart. That seemed to do the trick as the urinal is draining much more efficiently. Not 100% mind you, but I would say a 75%-85% improvement, which is good enough for me.I gave it 4 stars because it has given me the best results out of all of the products that I've tried over the years. 1 star off because, although it works, it didn't completely get rid of the problem. I would still re-order it and will continue to use the product because it is effective in getting rid of most of the problem.