I needed a hard water stain remover and saw Edfred at the local drugstore. I thought it was a funky name, never heard of it but I decided to try it. I'm so glad I did! Truly it's the best product out there. I've tried CLR and other hard water cleaners but none of them come close to the power of Edfred. I actually used up the last of my bottle last month. I was bummed because I couldn't remember where I bought it and didn't see it in the grocery store so I went online and found it on Amazon. After I purchased it (and paid a lot for it) I found EdFred online. The owner was nice enough to email me (unsolicited) to tell me where I could more affordable purchase his product. How often do you get a personal email from the owner. Just sayin' A fabulous product AND great customer service. You can't ask for more than that. P.S. I don't normally have time to write reviews of products but I strongly believe in this one. Try it for yourself. You've got nothing to lose but a cleaner, film free bathroom!