Bio Clean: Eco Friendly Hard Water Stain Remover (40oz Large). Pack of 2

Used on our car that had sat by hard water sprinklers for a month. I didn’t realize it was a problem until I couldn’t see out my windshield and a car wash wouldn’t clean it!Found this stuff and used it tonight and it came off SO EASY.It smells like mouth wash, is like a green goop, and feels gritty. We wore gloves and masks and glasses due to the skin and eye burn warnings. We rinsed the car with water, scrubbed green goop all over the windows and windshield and mirrors, and then rinsed and buffed with a microfiber towel. BOOM. Crystal clear glass!The edges of the windows have a tiny layer of hard water, but that’s probably because we didn’t scrub the edges as much, so we will do another round tomorrow to get it real clean.I’m so happy with this product and how quickly and easily it worked! Shipped within a day! I’m so relieved because everyone on Reddit was saying no matter how many chemicals they used they couldn’t remove the hard water off their cars. I’ll have to go suggest this stuff!!10/10

An amazing product. I was skeptical it arrived and I cleaned the shower glass effortlessly. Applied the cleaner with a damp wash cloth, could instantly tell it was removing the soap scum and hard water stains from the glass. Rinsed and it was completely clean and clear. Simply amazing.

Follow the directions. Wax on, rinse off. No more hard water or soap scum.

Works great but if you leave it on too long it stains the surface.

Fabulous product for removing hard water and other stains on a variety of surfaces. Suggested by the professional window washers I use.

This cleaner works great in sinks and showers.

Great for watermarks on glass

works great!