Grout Gator

I'm the person in my household who cleans the grout. Bathroom grout, hallway grout, shower and tub grout... what seems like miles of grout lines. After spending way too much time on my hands and knees cleaning one grout line at a time, the idea for the Grout Gator popped into my head. Why not make a brush that could clean many grout lines at once?