Zep Home Pro 発泡ミラクルグラウトクリーナー&保護剤 - 32液量オンス - (1パック) 2イン1 スパークリングクリーングラウトライン用

This works great fir the grout to clean. There is hardly any scrubbing, not much of a strong smell. So easy to spray and to use with a sponge.

Before and after, worked very quickly and with little effort (used a toothbrush to try and be funny) and worked excellent. But get a grout brush let sit for 2-3 min and scrub!

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

good product

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.