Great site for DIY... Removing and replacing old grout. First Remove the old grout…. If the grout is already coming out and is fairly loose – Use a grout removal tool found at all home improvement stores. Scrape along the damaged grout line and dig the old grout out of the grout joints.
How to Clean Grout at Home All one needs is a brush and some baking soda and bleach. Mix the two ingredients to form a thick paste and then apply it onto the grout for minutes. In no time at all, the grout will be removed with the aid of gentle scrubbing.