I actually started getting very tiny crickets because I was afraid the ones I was using were too big. I do think the smaller size helped, but he is still a very picky eater. When I spot feed him in the small Kricket Keeper, he usually roams around scattering crickets out of his path, yet he doesn't seem to notice them. Once in awhile, he even will use his 'hand' to brush one off of his head but he doesn't try to eat it. I did see him eat 3 in a very short time once, so I know the size is okay and he is able to eat them. I guess he eats when he wants to, but he sure isn't growing!