Any grout cleaner at your local home center will work.
it all depends on what kind of tiles you have ...IF your tiles are ceramic or porcelain you are safe to use Clorox or ammonia . If they are natural stone different products you need to use
Hi Keith - This is the shower cleaner that we use to help keep grout and tiles clean and minimize the mildew - it works on kitchen grout too. I've also included a great article about mold if it's gone that far. Hope this helps! Hugs, Holly
PS - We have a FREE eBook with recipes for all of my homemade and all-natural cleaners. You can download it here --> https://pinkfortitude.com/thank#GreenClean
Whatever you opt for, don’t use vinegar as it will dissolve and damage the grout.
Heres some other recommended cleaners
The Best Way to Clean Grout-EVER!!! | Hometalk