I'm going to have to try this. With tile floors throughout the whole house, keeping the grout clean is a challenge. Hopefully you don't have to scrub too hard. http://media-cache-ak2.pinimg.com/originals/c2/d8/bb/c2d8bb60e63203912e15898b6e8478d3.jpg
How to replace black moldy caulk and clean a tile shower. Ugh. Gonna have to do this with one of our showers since every other pinterest tip on cleaning moldy caulk just ain't making it looking good as new! Ewwwwww.