Ive never used lobster roaches but i use dubias and my guy loves them. I cup feed with a little peice of screen glued to it so that they can climb up and down so my chameleon can see them, they move around in the cup for a bit then they all just congregate at the bottom and sit there haha so i have to force some onto the screen so he can see them. Im afraid to free range them cause i think they will just hide under something then i will have to go looking for them