Extremely satisfied with this product. It removed years-old limescale and yellow stains, as well as rust and various residues from some outdoor tiles.

I used it to clean the deposits on the middle exhaust tank of the motorcycle which is underneath, applied it with a brush and rinsed with water. Perfect result, it became like new.

Fantastic cleaner but be very careful where you use it because it can cause damage.

The most classic toilet cleaner in its strongest version. It helped a lot to restore the original shine of the toilet bowl, with a bit of scrubbing, yes, but it did require some effort on your part.

I bought it for cleaning the motorcycle exhaust neck. Perfect result.

Very strong, I poured it into a toilet that had developed a light scale, left it for a while and then when I scrubbed it, it cleaned immediately. I had tried bleach before but it hadn't worked

Completely useless. I read the comments and was misled into thinking it was a powerful product. It says not to leave it on for more than an hour because it will damage the enamel. Guys, where did you see that it works? I left it for 1 hour, scrubbed, poured water, result 0. I thought maybe it needs more time, so I left it for 12 hours. I left it for 12 hours, scrubbed and scrubbed again, poured water, result absolutely nothing.

Apart from the toilet bowl, it does an amazing job in the bathtub. You leave it for an hour and then just rinse with water. Spotless.

Very powerful product for salts and the grime of the toilet bowl! In five minutes it has cleaned everything. Caution! Do not leave it for longer, as it may damage the enamel on sanitary ware.

Excellent product, I used it in a toilet bowl with limescale and grime. I had emptied the water and left it overnight. In the morning, it was like new

Very good product. I use it, apart from the toilet bowl of course, to clean the joints of the tiles

The best for grime! It tackled a spot in the toilet that I couldn't reach well with a sponge, and I used this specific product locally. I removed the water, applied a sufficient amount to the specific areas, and let it sit. After 10 minutes, pieces were coming off! I haven't tried a better product.
upd: I also used it for joints, and there was no need to scrub for the yellowing to go away (not the mold). Excellent.