Ever since we bought our house, our kitchen floors have not been my favorite. I've tried every trick possible to clean the grout - baking soda and vinegar, acid, swiffer mops - everything! Nothing seems to look like they were cleaning or lightening the grout like I wanted.
I remembered a post from Young House Love about a product called Grout Renew that is essentially painted on the grout line. I was willing to give it a try.
While it said to use a toothbrush, I found that a small paint brush worked best. It took two days and many hours - there were plenty of times I wanted to quit.
But, ahhh, it was so worth it in the end. Our kitchen (and tile) looks completely new.
Before and after:
I hope I don't have to do this for a long time, but it was worth it for a quick kitchen makeover!