I have 2 of those cricket keepers from PetCo (Yeah i know, LoL). Anyways, the smaller keeper i keep 100 small crickets at a time in it (for my baby beardie). The larger keeper i keep 50 crickets at a time in it for my older beardie. I feed them greens (just sprinkle some in the bottom) and i also use a water pillow so they can get water. They last me about 2 or 3 days before i have to go get more. But i have a bait and tackle shop by my house, so i can get crickets dirt cheap. If i house too many crickets, they tend to die because theres just too many in the houses.....Just my 2 cents....=-)