- Microwave vinegar for 3 min in glass measuring cup
- Pour directly on grout in a 5ftx5ft area
- Let sit for five minutes
- Use grout brush to loosen dirt
- Wipe away with a damp cloth
- Mop area with regular floor cleaner.
The before picture makes me cringe. It is gross and it takes a little time to do BUT it works and it is cheap. I like the fact that the vinegar can't hurt your cloths or pets or kids. I still have a lot of grout to clean but I'm just doing it in little patches.