Zep Commercial Grout Cleaner, 32 fluid ounces

works very fast. i follow the instructions,let the product sit for 3 minutes and you can see it works. i use a grout brush to scrub it better since the tile grout was very dirty. it does smell a little strong tho. also i wish bottle was bigger,since i thought it was a cleaner to dilute with water but is not,and i don't think one bottle is enough for the hole house.

best tub cleaner i've ever used . the stains just melt away ffrr . like pair this with some dawn , a dog magic eraser or a reg towel and it's going to shock you how the stains just remove themselves . i just revived my sons toilet and shower with the help of this from the horrible condition it was in . i DID have to use like 2-3 bottles so i wish it came in a bigger OZ size . but well worth the purchase because the stains we years of build up and no care