I have been trying to handle my BPs daily if possible even if it's not actually picking them up. Every night when I get home from school/work I pop open their tubs and say hi. Give them a little petting just to get them used to seeing me and my scent. My new pastel, Craig, hisses once in a while. When trying to handle them is it best to just leave them alone at that point? Will any further handling just aggravate them more?