* Earth-Friendly Cleaning Tools * Tough Bristles for Grout, Softer Bristles for Tile * Renewable Bamboo and Recycled Plastic * Hangs for Convenient Storage * Stands on End for Quick Drying * Recycled Material * Come Clean. Full Circle. A little effort goes a long long way with our iron-shaped grout brush, designed to make one of the most unpleasant household chores a whole lot easier. The outer softer bristles clean tile, while the tough narrow middle bristles do a killer job on grout.