Only tried hopper this time. I just wanted the guy to eat. Then maybe once he gets to eating multiple I can try the ol second mouse /rat swap on him. But for me I will sleep a little more sound knowing he has eaten regardless what it was. I assume first time feedings concern a lot of first time owners and just wanted to put it out there for all to read as I'm sure soon to be owners , new owners (me), and long time owners can relate to it on some level. The joy of the first feeding oh what a relief!