I've got a Bissell Steam Mop, so it's for floors. I do not see any way it could be used on the tub/shower, except the floor. Man, I just wrote someone about starting to cut out fabs today for a quilt...and you just had to go and mention the housework subject. BOO... OK, maybe if I do the floors first, it'll give me an excuse to play afterwards...a treat to look forward to and anticipate. ; - D