I’ll simply say that it’s miraculous! I didn’t even drain the water or scrub! I just poured in enough for an hour and all the limescale came off! As I ran the toilet brush over it, it came off like paper!

It managed to clean even the old bathtub, whose surface has become rough because the enamel has worn off.

It removes everything. Be careful though because it is a strong chemical, always wear gloves and keep your head away when pouring it so it doesn't splash into your eyes at all.

For a 2010 toilet, it had a few stains from the water. I went over it once, then after 15 minutes a second time. I scrubbed it with the toilet brush and it cleaned PERFECTLY... without much scrubbing, it gets the job done!!!

Really impressive, it made a toilet bowl shine again after abuse by tradesmen and with black limescale, which was about to be thrown away.

It does an excellent job on the toilet bowl, but also more generally as a toilet cleaner for tough dirt (stuck-on limescale, etc.)

Very good product.
I removed the water from the toilet bowl, poured in a generous amount because it had heavy limescale, left it for about 5 minutes, and then scrubbed it with the toilet brush. I did it twice so I could clean all the spots that I hadn’t scrubbed well the first time.
I highly recommend it.

The product is amazing. I have been using it for years and it has cleaned almost everything in any bowl I used it on, and once in a bathtub. It requires great care because it is caustic; it is a good idea to use protective glasses, especially when scrubbing, be very careful around the eyes, and definitely wear gloves and an old shirt. It needs good ventilation while it is working, especially if used in quantity, and to me it smells like almonds.
During transport the package was torn, fortunately I received my order intact

Saved! Just empty the toilet water before use!

The product did its job very well. It cleaned the toilet bowl from scale and accumulated salts that would not come off with common commercial cleaners. It is a very strong liquid, ideal for cases that require a drastic solution. Very satisfied with the result.

There is nothing better! The tenants had ruined the house's bathrooms! The toilets needed to be thrown away and yet they were cleaned and became like new!

I bought it for the second time, being incredibly satisfied from the first time I chose it. I had just rented my new house and wanted to clean the toilet bowl very well. I succeeded!! But after years, I saw a little bit of scale inside, where the water collects. I removed the water, poured some of the product I bought a few days ago, let it work, scrubbed, and poured water. To my great disappointment, I saw that the product did not do the job I knew. I don't know if the formula has changed, but it has nothing to do with the product I knew. What a pity!!

Incredible product! With a light scrubbing, the limescale that forms from water in the area where a large amount of water flows was removed.

I had tried many times with vinegar and baking soda (which did something but not sufficiently), but this made everything disappear! I poured a small amount undiluted into the toilet bowl (which had water) and left it for two hours with the lid closed. I repeated this two more times and the bowl became sparkling white. Wear gloves!

Amazing liquid, with the second or third use and without scrubbing, it cleaned the limescale that forms black mold at the bottom of the toilet bowl. Also, wherever there is mold in the bathroom due to humidity, it cleans it.

Works amazing, nothing else we tried ever worked. If the toilet is really bad, it might need multiple rounds. The smell isn’t unpleasant, but it is very strong. Make sure to open the windows, wear gloves, and don’t stay directly above it for too long. I used gloves and a mask; if you need to scrub hard, wearing protective glasses is a good idea too. Ours was pretty bad but didn’t require much scrubbing. Close the toilet lid, let it sit for as long as possible, and then flush or scrub.
Our toilet had calcified buildup that had turned yellow on the sides. No matter how hard we scrubbed with different products and pumice stones, it never went away. I applied this product before going to sleep, and when I woke up most of it was gone. It still needs a few more rounds, but this product is truly working wonders.

What you say in the comments is not true. I emptied the toilet of water completely. I left it for 2 hours to work. It did the job but not the job I expected, in no case did it clean it completely. I put my hand in the water after removing the product and, scraping with a spoon, I took out half a kilo of scale from the walls!!! Be careful, the spoon might scratch the bowl a bit if it’s new and you’re afraid of damaging it. The bowl was completely cleaned but it took me over 4 hours in total!!! The product is good but in no case miraculous as you say.

Very good. It cleaned the scale from the toilet bowl and sink perfectly!
Just be careful with the fumes. Wear a mask. It is very strong.

Very caustic, use only with gloves. A small amount is enough and it makes a lot of foam. It cleans limescale and years-old yellow stains in the bathroom very well.

I can say that it did the job it was intended for. It dissolved accumulated scale in a toilet bowl that hadn't been cleaned for over 30 years!

In the store's toilet bowl, it whitened everything with a small amount directly into the water of the bowl. At home it didn't work like that and I removed the water. I also used much more product but although it helped, it didn't clean it completely. For its price, it's fair!

Excellent product! It immediately cleaned the limescale that had built up in the toilet due to materials that a technician had thrown in

2 toilet bowls that had limescale for over 10 years became spotless! 40 minutes of application and 99% effective! Empty all the water and the result will surprise you. VFM.

The toilet bowl in the apartment I moved into was full of limescale, you couldn't see any white color underneath. Following the instructions from a video, the bowl became like new. I had to completely empty the water from the bowl and repeat 2-3 times. Before getting this particular product, I had tried with hydrochloric acid but it had no effect. It works like magic, if you have a problem with limescale, get it with your eyes closed.

Excellent!!! The toilet bowl became like new. It definitely requires good ventilation and the use of a mask during cleaning.

Amazing product, I had tried everything without results, with this one I emptied all the water from the bowl, poured in half a bottle, left it for 3 hours and the result was a spotless toilet like new

Attention! This product leaves white marks to the point that the color of the sanitary ware has been altered, which in my case is beige. Obviously, on white sanitary ware, the whiteness is not visible. It is caustic, it alters the enamel and the color of the sanitary ware.