Harsh chemicals like Hydrochloric acid, muriatic acid, urea monohydrochloride, and nonylphenol ethoxylates just to name a few. Are found in many grout cleaners, these chemicals will break down the components of grout, leading to a weakening of its structure. This can result in crumbling or deterioration over time, compromising the integrity of the grout lines. As you can see in this image over time this grout began to crumble and pit leaving one choice but to remove the grout and start over. This can all be avoided, Give Us A Try!