Since the construction work done on our street, our water has been a little bit rusty. It left our toilet bowl with a nasty rust stain "line" from where the water comes from to the water in the toilet bowl. It also left a rust stain "ring" above the water line. I've tried cleaning grade vinegar and bicarb soda, bleach, gumption, etc. and they all didn't work. Finally tried this product and it worked! You have to keep spraying this every 15 minutes as it eats away that rust mark until it's all gone. Tried it on my bathroom floor and it ate through all the soap scum as well. Just make sure that it's well ventilated as the fumes from this is thing is nasty. Main ingredient is acid of some sorts. This product is awesome!

My Customers love this product!!! cleans the water damage off the showers that has been there for years this is the best cleaning product I've ever used would not buy anything else

I've tried several shower cleaning products and none remove the soap scum. After a friend recommended this I went out straight away and bought some. I sprayed this on, wiped it with a cloth and rinsed. Shower screens look brand new. I can't recommend this product highly enough, it's great!
It works and it's affordable.