The first time I turned it on, it didn't want to work. The instructions aren't the best to describe how long it takes to warm up or the noises it makes. After messing with it the first time I tried to turn it on, it wouldn't steam. I gave it about a week and tried it again. I used the steam water in it and it worked good. It did shut off on me once, but after turning it back on, it worked beautifully. I tested it in a old spill that was dried up. I used it on stick down tiles, porcelain tile, and vinyl plank flooring. It worked great and dried quickly. There wasn't any residue left behind.