Ummm, let me tell you about finding meal worms where they weren't supposed to be.
I was keeping the three-drawer file box on my small boiler inside the water heater closet. I noticed a couple meal worms crawling around on the floor under the boiler. That led me to inspect the worm box, and there were worms crawling around on top of the boiler. Then I pulled out the drawers of the file box and discovered the worms had found their way out of the drawers and had colonized the inside portions behind the drawers.
The little critters had figured out they could escape the drawers through the air holes I'd drilled in the sides of the file box. (Lesson: only put air holes on top of your worm containers if you feel you need them.) As I was taking the box apart to get to the worms inside the walls, I dropped the pieces, and worms went everywhere. In trying to get the worms corralled, I ended up with worms all over the kitchen. Luckily, the beetles were so busy having sex, they didn't join the jail break, or I'd have really had a circus on my hands.
This is why you need to make sure your worm containers have vertical, slick sides, and the bedding needs to be low enough they can't reach the top by extending their little, wormy segments.
This episode was nerve-racking, but it wasn't nearly as bad as the time I was trying to verify I had grain mites and was looking closely at some with a hand lens and ended up sniffing them up my nose.
Good times.