It's not baking soda or vinegar! This inexpensive product is all you need to quickly whiten blackened bathroom tile grout!

This product, which can be found in supermarkets for a few euros, is perfect combined with bicarbonate. They are an effective remedy for eliminating and neutralizing mold odors. Hydrogen peroxide is also an excellent degreasing product.

Simply mix ½ liter of hydrogen peroxide and ½ cup of baking soda (about 100 grams). Mix the 2 ingredients well until you get a semi-solid paste.