Zep Home Pro Foaming Miracle Grout Cleaner & Protectant - 32 Fl. OZ - (Pack of 1) 2-in-1 for Sparkling Clean Grout Lines

I don’t normally write reviews, but this deserves one. In a word~ Amazing! Years of build up in the grout that gets missed by a swiffer or mop. This cleaner worked great and very little elbow grease needed! (I used a straight edge grout brush).

This stuff cleaned the gunk that I couldn't see. I clean my shower weekly but kept noticing a weird slimy feel on the grout. I used this stuff yesterday, let it sit for a few minutes and then used my scrub daddy sponge. When I rinsed it clean clumps of gunk (not grout) was rinsing down. I can only imagine what it was, some kind of mold most likely. I have dark gray grout. I am ordering another bottle for the downstairs bathroom.

This is not a miracle cleaner; you still need to scrub hard. It works okay with patience and scrubbing.

good product

Worked great and priced right.