Blackened Tile Joints? The Miraculous Cleaner To Whiten Them Easily 100 g of baking soda – 75 ml of hydrogen peroxide – 1 teaspoon of dishwashing liquid How to do 1. Mix all the ingredients together. 2. Take the product obtained with a sponge. 3. Gently scrub the joints. continued on next page Pages: 1 2 3