It sounds like you do the same thing that I do for my frog... I just buy it from the petstore, keep the crickets in the same bag, give them a moist paper towel and then give them some flukers cricket food and I usualy only lose 2-5 of the 15 crickets I get. Not sure why yours are dieing but I agree with everyone else, you should switch from the flukers and go to moist cottonball/paper towel. Oh and whenever I put them into a different container they just die.