Has anyone tried them grout and tile steam cleaning machine from Home Depot? I usually clean my grout at least once a year in my kitchen but I usually do it with lemon juice and on my hands and knees scrubbing. I hate it, but it looks super clean when I'm done! I want to try this rental but I'm afraid of it not working. I'd rather not pay $70 for the day if I'm gong to have to scrub it myself afterwards anyway. Curious if it actually works??