how long have you had them? It will take several weeks for them to even get use to their new home. Don't worry. Try putting one of your old tee shirts in the viv so they can get use to your smell (soemthing you have worn recently). and just keep putting your hand in there near them so they can get use to yur hand around them. Before you put your hand in talk to them in a soothing voice and let them know your there. Even if you just go and put your hand in there several times per day with out any intention of picking them up, they will get use to you. Also, if you just wlak by and talk to them through the glass. Alsotry giving them soem lil treats, like a little piece of strawberry or apple (not too much, too offten, just lil bits) but then they will associate good things such as treats coming from your hand.