hmmm, I wonder if you store a used one (that you've rinsed) in mouthwash and then reuse it. You know like your contacts. I hate disposable one time things.
If you are looking at toothcare KM, here is an intersting site for you to read. It is not in lieu of your toothbrush, but you do feel like you just came from having your teeth cleaned once you have done this and then brushed. www.oilpulling.com