I had one of those screen feeders and it was great for roaches but not sure about crickets, I think they would just jump out? I honestly got lazy and took it down and started feeding my guy his dusted roaches by placing the roach on the screen door of his enclosure (holding it half open). Roach will race across the door, so a lot of movement; my cham loves that so he hurries on over. I do often need to move the roach back to the "starting" point a few times if it's a fast one. He really, really enjoys zapping them while they are on the run across the screen up to the corner of the door... This obviously takes longer to feed him but watching him eat is part of the fun.