I like using the 4 cup coffee cup holders you can get at 7-11 as a place for the crickets to hide. I keep a 40 watt night time bulb over the cup holders as my basement gets a little cool in the winter. I feed the crickets dry dog food and cat food processed with a blender and add multivitamin powder. I use fruits and veggies to keep the crickets hydrated and change them twice a day. Normally, i use red pepper, green pepper, strawberries and apples.
Not sure if anyone else has had this problem but my young crickets do not seem to do well when i offer orange slices. Adult crickets seem to not have any problems, however.