This is all a matter of personal presence. Adding another task to your daily cleaning ritual might not sound all that appealing to you, or some of the members of your family. It has been suggested by many of these companies that users pick up their product off of the tub floor and drape it over the side to dry when they are done, but some users just opt not to do this. That’s perfectly ok, and it will not harm your unit in the long run. The only problem with not taking your unit out of the bathtub after every use will just mean that you might have to wash it more frequently than those that hang their design up to dry after every use.