I will definitely have to pass on the roaches too. I don't think there is anything that could contain them enough for me.. Of course, the hubby would probably love it. 

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I grew up on a ranch dealing with all sorts of critters, injuries and nasties. The cockroaches have always done me in. It seems to get worse as I get older.
As for the mealworm housing: the three drawer method is definitely my favorite. I start with the worms in the top drawer. When I start getting pupae, I move them into the second drawer. When the beetles emerge, they are moved into the bottom drawer. They lay their eggs in that drawer. The worms will start hatching and the while process repeats. I will usually feed my birds or freeze about 2/3s of the worms once they are a good size. The remaining 1/3 is moved to that top drawer to be the start of the next generation.
I am planning on getting a second set of drawers to get another batch of worms started. It is a riot to watch the birds flip out when they get their goodies.