Tooth brush, oxy clean solution. You can cheat and use a grout sealant...it reminds me of a nail polish bottle...brush is in the cap.
Here's lots of tips from other Hometalkers Aileen
Hi Aileen! This is a question that is asked about a great deal, and there are some tips listed to help you with this. Good luck to you and Merry Christmas Aileen!
Hi Aileen - 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. Hope this helps! Hugs, Holly
PS - I'm getting ready to release a FREE eBook with recipes for all of my homemade and all-natural cleaners. If you want to know when it's released, you can get it here --> https://pinkfortitude.com/thank/
I actually just used cement paint; it comes in almost any color you can imagine. Keep a bucket of water handy and if you paint "outside" the lines you can immediately clean it up, or I also found that it rubs right away from the tiles after it has dried. I have also used this technique on the mortar between my fireplace bricks. The grout used to be black but I changed it to gray and it brightened up the whole room.