This hard floor cleaning unitreally works! I've used it twice and the grout has already lightened. It cleans and dries the floors. It came with a sample of the all purpose cleaner. I've already ordered the grout and tile cleaner. I previously had a competitors unit that used a fabric roller. I like the brushes so much better. Keeping the unit clean is easier too. I have hard flooring throughout the house and cleaning it is now a breeze.