It is excellent! It cleans everything, rust, salt, dirt. Try it on joints, it cleans without any rubbing.

I used it in five different toilets and it had very good results. It removed all the stains and salts. I used almost half a bottle in each toilet, where I poured it periodically, and in the end, I let it sit for at least 15-20 minutes and then scrubbed the entire inside of the toilet with a plastic brush. In case of rust, I noticed that you have to pour it multiple times on the stain and gradually it removes it. It is very strong, so be careful.

Carpet? I didn't like it at all and a drop fell on my hand and even though I rinsed it immediately, it burned me.... just awful