I have a little dog (Baa Baa.) He likes to sleep with me and I worry that I could cath parasites from him. Could I? Please explain to me more about what I can put in his water and what this will do for him and also about Zapping. I know nothing about Zapping. Mostly I'm concerned about catching his cooties. I love him and I'm not giving away my Baa Baa boy, but I may have to stop letting him sleep with me. Help me out.