Scrub-a-dub-dub, just not in a tub. Why aren't bathtubs universally friendly? (We've uncovered ONE possible exception at the end of this post.) Tubs in general aren't safe because you must lift your legs and lower yourself in, which means there's a period of being off balance or a threat of falling. Walk-in tubs aren't much of a solution because you must sit there, often times chilled, while the water pours and empties, and the units traditionally leak. We recommend against other than the exception alluded to above.