All of mine are on F/T. I've never had to feed live. On a few I stuck chick down/feathers on the rodents' heads and that did the trick to get them started. Some juvies needed to be lizard scented. Sometimes people pull the thawed item too early..leave it in for 2 days before pulling. Split-braining hoppers or adults (depending upon the size) and smearing it all over the skull works sometimes on reluctant feeders too. Mine switch from rodents to chicks as well. Chicks are a good way to start them on thawed too as most love chicks. Rat pups are like candy too!
The little Gemmicinta pictured is almost solid black now.

Bill