Send a PM to Ihaggerty1313 (Ian), from the Roach Ranch (theroachranch.com) He breeds them and is the best person to ask this type of question. He also seems very good about answering all ?s. I wonder if it could be maggots from small flies that have gotten into your roach bins? I think you should take the bin outside, move the egg crates and roaches into a temporary container and clean out the bin. I would use good hot soapy water and rinse thoroughly and dry the bin then return the roaches to the bin. I think it might be wise to replace the egg crates as well to make sure none of the small white worms are hiding in there so that they don't get put back into a cleaned bin. Not really positive so ask Ian for help. I would think that the worms could be a bad thing especially if they are maggots (could be carrying disease or parasites that could be transferred to the roaches then to your dragons when you feed the roaches). Plus, I don't now what brand new baby roaches look like yet as I am just starting into the dubia colony thing.