I agree with Bill. I know you probably don't want to make a "big deal" of it, but there is absolutely no reason why you cannot ask your employer for a private CLEAN room to do your treatments. They provide rooms for nursing mother's to pump and can do the same for you. You could have a clean space to keep the equipment, a sink for washing, etc. Under the ADA, employers (assuming you work for a larger company--doesn't apply for less than 15), must provide reasonable accommodations, but you have an obligation to ask and then work with them. HR is trained to know how to handle this and most companies will go above and beyond. That said, if you have a car, personally I'd prefer that route--we actually do that with ds rather than haul into in-laws house sometimes and have hassle of setting up with hovering gp, etc.