Bests & Worsts Reviews from Amazon

I bought this product to clean mold from the grout in our shower. We recently moved into a newly built home and, despite sealing the grout, we already have mold in the shower grout. I followed the directions and made 3 attempts to remove the mold. The product made no noticeable difference. Considering the price of this product, I expected more. Unfortunately, I'm still in search of an effective grout cleaner.