Advertisement Hey all I've recently acquired small numbers of B. dubia and B. lateralis as feeder roaches for my tarantula but I've been fascinated by them as well. My Lateralis colony (small, about 30 individuals) is doing great. In a couple of days about ¼ of the roaches actually molted. They eat a lot and aren't that afraid of light. I've had a couple of deaths but only on smaller specimens. What worries me the most about them is heat and humidity. They LOVE the heated part of their enclosure and rarely move to the cooler side, but I'm afraid that keeping the heating pad constantly on will dry out their enclosure too much. When I set them up I added moist coconut fiber substrate (leftover from my tarantula enclosure) and this has kept humidity high, but it's slowly drying... My Dubia colony is my more pressing concern. I have about 20 medium nymphs and 10 adults separated into different containers. They are totally indifferent to heat and really don't seem to care about food either... I've placed pieces of orange, a bit of lettuce and some dry kibble inside but they barely touched them... I'm worried I'm doing something wrong that will kill them off. The nymph colony has a substrate (most have actually burrowed) and the adults are on a plain plastic container with no substrate and just egg cartons and food/water.