Yep, I’m pregnant and hadn’t cleaned my bathroom for like… we’ll just say ever. The grout had actually never been cleaned since we moved in (don’t judge) so when I finally got over morning sickness and cleaned the bathroom I decided it was time. I tried this mixture and it actually worked pretty well.
7 cups water
1/2 cup baking soda
1/3 cup ammonia
1/4 cup vinegar
Mix well, put into a spray bottle and spray area. Wait an hour, then brush clear! (I used a bristle brush)
BONUS TIP: Because my tiles are white I also used some Comet bleach after all the scrubbing and it got rid of most of the deep stained areas (not pictured).