I gave my husband no choice. Since I rarely just say this is the way it's going to be he knew I wouldn't bend. I knew that if he didn't get parasite free I wouldn't stay clean so he had no choice. When he forgets to zap I go up to bed and tuck the handles into the sides of his underwear and turn the thing on for him. Dr Hulda doesn't recommend sleeping while zapping because you are more likely to get burns but we are careful. You may just end up haveing to do the work of the changes for them. Mix up the fiber drinks etc. As to getting them to live healthier.... that's an uphill battle. Once they see results I'm sure we will have won them over.