Step 1: Clean a Toilet Bowl
- Pour Coke into the bowl. Pour it around the rim so it flows over the stains around the inside of the bowl.
- Let it sit for at least and hour. The acids in the Coke will break down the stains.
- (Optional) Use a brush to scrub the toilet bowl.
- Flush the toilet. Most of the stains should have been dissolved by the phosphoric acid in the Coke.