I bring an inexpensive Glade cone-style air freshener for the bathroom, and toss it when we go home. They don't last longer than a few days no matter what the label says, and it's not a spray that could leave residue. Usually by the end of the week it's dried out and the smell never seemed to go beyond the bathroom anyway. We especially do this for cruises because sometimes there is a septic odor that goes beyond what my DH causes!