Roaches can be kept in limited space without much worry as noted in previous posts. We notice with Our Roaches that breeding seems to take place more effectively in close quarters, with as many eggflats as can fit comfortably. Just be sure to keep the ratio of female to male favorable as excess males can prevent females from feeling comfortable in breeding as well as use up resources. Feed off older males first and I suggest a bit more than 50 as this will be a slow start. If you want to breed and feed I suggest ordering mixed variety where you will get a mix of all sexes and ages.