ERASES HARD WATER STAINS
This is great! I had yellow, hard water stains on my tubs and steaking down my toilets. I  tried everything and nothing worked until I used this. My tubs and toilets are pristine white now :) No toilet rings! It def takes a BIT of elbow grease, but it will come off without scratching your porcelain. TIP: Use it first for the tight corners while the edges are sharp. This is now a staple in my house now.
Rating: 5 stars