Cleaning tile grout is an important part of keeping your home looking nice. Be sure when doing the cleaning that you read the product label carefully. Acidic cleaners and harsh chemicals like bleach should only be used as an extreme last resort. These chemical cleaners physically abrade the surface of the grout, taking away the top layer. Rather than directly cleaning the grout, they are merely eroding the dirt away to reveal fresh grout underneath. Instead, using baking soda and vinegar, applied with some elbow grease and an old toothbrush, can create equally nice results without ruining the grouting.