Customer Reviews for ZEP 128 oz. Acidic Toilet Bowl Cleaner

Very good. In a day it knocked out built up calcium and lime deposits in the toilet that had been there for years. Let it sit for about 40 minutes for the really tough stuff, though.

This is some fairly potent stuff that I was using to remove deposits from a toilet bowl and related parts. It's hydrochloric acid based so it's advisable to test it before use. It will attack many metal parts. I recommend keeping it in a secondary container on the off chance that it might leak during long term storage. I wish there was something thicker to stay on vertical surfaces longer. But I'm not complaining. The only thing that I know of that's more potent is Calci-Solve.

Great product. Is it safe to go into the environment?

This really works, I was worried I'd have to get a new toilet it was horrible. I used the gel toilet bowl cleaner under rim and poured a little of this in the bowl and let it soak over night. Flushed in the morning and a new toilet look.

Fast acting on heavy scale. The blue dye dissipates in a few minutes and does not stain the bowl like other products.

This stuff really works. Just 5 minutes to a clean toilet with no work involved.

Really works on under the rim stains

We had some rust stains in our toilet that we had tried several products on with no luck, and as soon as we squirted the ZEP Acidic Toilet Bowl Cleaner in the bowl it started working to remove the stain away. It worked great and I highly recommend it!

Great product! It took care of my problem with ease- it exceeded my expectations.

this product cleans very well removes tarta quickly and leaves it clean

This worked pretty well on stains in the toilet although I was able to scrape most of the brown crud out with the brush. I had to use a pumice stone to get the last bit out. I would say if the stains aren’t that bad, or really built up, this should do the trick.

Very good and nice product

The Zep product worked 100%