Those people who sold the Bean have never bothered answering my after sale emails...very deceptive. However, I like using the Bean because I can go along rifing without having to be sit. I can move around the house and go outside and still get treated. The problem when we do not have great results is a problem of not knowing what has to be treated, or has to be treated first... We buy an unknown technology and the small device is plain enough so it is not the material that is so costly and the whole picture may leave more people dubitative about it.