Oh Yuk Healthy Hot Tub Cleaner, The Most Effective Hot Tub Cleaner for Indoor and Outdoor Hot Tubs and Spas - 16 Ounces

This stuff works great! I cleaned my hot tub today and the water looks pristine. I wish I had taken a picture of all the gook that came out of the jets. My hot tub is back to perfect conditions and I’m happy knowing that this product saved us from hidden algae and biofilm.

I have used this several times now right before we empty our hot tub. It sure seems to get all the grimy stuff nice and cleaned out for us so we will continue to use. Super easy to mix in for an hour right before you do an empty/refill to just really make sure the plumbing is nice and cleaned out. Highly recommend.

Been using this in my hot tub for over a year now, the bottle has enough that I put some in a spray bottle to spray everything down and scrub. Always gets my hot tub very clean. Easy to use, just dump it in and circulate the water before you drain.

I bought this because our neighbor has a hottub like ours and said it really cleaned and brought out the nastyness you didn't know was in your tub. I used this and did not see any unusal dirt or grime. But I am glad I used it. Guess my tub was really clean.

We have a jetted bathtub. I use this every other day and not only has it gotten the mold and mildew out of the jets it keeps it away

Have purchased this product several times now and have come to depend on its ability to thoroughly clean our spa tub! Hubby maintains our hot tub and was amazed the first time we used OhYuk! to clean it: all the gross stuff it dislodged from the pipes meant that we felt the water was SO much cleaner. And now we rely on this product to help maintain a clean, healthier spa. Well worth the money and keeps our spa clean and fresh!

This really works! I used it in my bathtub. The nastiness that came out was unbelievable!! Will definitely buy again.

I was expecting it to be stronger. After I used 8 ounces and waited an hour, nothing was happening, so I poured all 16 ounces in 250 gallon hot tub. That’s when I started to see some green gunk come out after another hour. Hosed the tub and drained it thoroughly, and even after I filled it and turned it on the biofilm was everywhere. Ended up just dumping a bunch of chlorine and letting it run all night, then emptied it again and refilled. Now it’s clean. But this product really isn’t going to do the job on its own besides routine maintenance. Don’t recommend for built up biofilm.