Add 1 cup of baking soda to a large bowl.
Add 1 cup of baking soda to a large bowl.
Add 1/4 cup of citric acid.
Add 1 1/2 tablespoons of Castile soap.
Whisk the ingredients together until fully combined. The mixture should be the consistency of a snowball.
Fill an ice cube tray or silicone mold with the mixture. Allow the mixture to sit overnight to solidify.
Remove the toilet bombs.
To use, toss one toilet bomb in your toilet. It will start fizzing and eventually evaporate while cleaning the inside of your toilet.