This link will help:
Resolve carpet cleaner has something close to a miracle going on. That stuff cleans grout and doesn’t damage at all.
Hi Melissa - 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
I would use Thieves cleaner from Young Living. I use it to clean everything in my house