A few things can neutralize bleach foam, including dish soap, vinegar, and baking soda. If you're using bleach to clean your home, it's essential to be aware of how to neutralize it properly if you accidentally create too much foam. Simply add a few drops of dish soap to the bleach foam and stir it gently until the foam disappears. You can also add a cup of vinegar or baking soda to a gallon of bleach water to prevent too much foam from forming in the first place.