So I just got this AFT, and I read that they eat every 2-3 days. I don't want to be going to the petstore twice a week, so I want to be able to keep a supply of crickets at home. I read about gut-feeding them, but nothing on how to keep them. What sort of environment do they need? How long can I keep them alive? How many crickets should I keep at a time? Thanks for your help!