Keep them in a bin with a wrap of clear packing tape near the top so the babies don't crawl out. you should have 30 babies about every 30 days. They don't need any substrate but keep the poo in there for about 2 or 3 months so the babies can eat it, then clean. Make sure when you put grapes and stuff in there you take them out after two days or they will get moldy and kill your colony. The babies should reach maturity in 5 or 6 months. Oranges will help them get them in the mood to DO IT and will get them to make more babies. Keep the tub temps near 92 degrees and that should help them breed quicker. A high protein diet like kitten or dog food will make them happy and grow faster. Make sure you have a hole in the top with a screen for ventilation and make sure your humidity is near 40-60 %. They don't like light, and make sure they always have water crystal gel. It's best if you have 3-6 females per male and feed mostly males to your beardie. In a few months you should have several hundred roaches. Hope this helps