Some people use a glass bowl to put crix in all the time. Make sure it's big enough for ur frog can get out, this way u can see if they're eating. Crix cannot climb glass and some may hop out, but not many. There was an article on this if u use search engine u will find it. I beleive it was titled cricket bowl or how do u serve your crickets? Not sure, but good luck. They can take a month or more to get used to u. Be patient, if it's a dumpy/whites, you can offer food in morning and eventually they'll wait for their treat. Wax worms make them love u!!!!!! But not more than 1X a week. Offer a cricket if u still want to give them something.