i do this because its easyer. i put the dust calcium stuff thingymabob on the crickets. but the crickets clean all of it off of them. so i have a separate enclosure for them where i dust them with calcium every other day. and its nice because i don't have to listen to those annoying crickets all night. i just keep them in a separate room far away from the frogs cage, which is in my room. then when its time to feed i have a rubbermaid container that i feed him in.i put about 4 crickets in there and wait. of coarse i put a water bowl within the rubbermaid enclosure though. and thats why i feed in a separate cage. and because of the risk that he could swallow the bedding. even if i use the other dirt stuff that you were talking about. that couldnt be good for them either.