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O.K. These are pretty good instructions, but some things are not quite correct. I do know a fair bit about this as I raised them on a giant scale for scientific purposes. First, vary the food source. Carrots are good, but the more varied the food source, the better the worms. They definitely do not need to be in the dark. The is some evidence to suggest that it is better that they have a regular light-dark circadian cycle. They also reproduce incredibly well at 100+ degrees, but productivity will decline at lower temps (it is in fact better the closer to 100). Finally, NO MOISTURE!!! Moisture in the worm enclosure promotes all sorts of fungus activity that you really don't want. The only moisture the worms should get is from that in the food you give them. If you buy the bran at a feed store, definitely freeze it for a few days to a week prior to using (no need to bake it). Bran obtained from your local market doesn't need it. I keep my mealworms on my back patio (for most of the year) here in Tucson where the humidity level is typically in the single digits and the temps get higher than 100 degrees for many months on end. I've also raised them in highly controlled environmental conditions in the lab. My back patio is the best. Having said all that, all the other info is good. I too have a short synopsis of how to raise mealworms on my BYC page.
