I did the platform thing, and it was ok, but I found one major flaw in my design. I wrapped the screen on BOTH sides, dont do that. If you do that, any worm small enough to fall through the screen, gets stuck inside. On a more successful note, I have started using a small piece of an egg flat in my pupae tub. MOST of the beetles will crawl up on it, allowing them to be removed MUCH MUCH more easily than picking them out by hand. Grab the egg flat, put it over your beetle tub, give it a few good whacks, and you're done.