I'd like to know too. It is such a hassle to add to my day. Also, how often are we supposed to have the equipment replaced? The strap that goes across my face makes marks on my cheeks that don't go away for an hour or so and at age 64 I'm getting acne in those areas. Has anyone else had similar problems? And at four ounces per soak that could be pretty expensive when buying expensive sanitation fluids.