I have started trying to raise my own redworms.

I started them in 48 quart plastic storage boxes. 20 worms in each box became so numerous that I had to move them to something bigger.

I have two old deepfreezers (about 22 cubic ft. ea.) I have the worm bedding in and have transferred the worms.

Twice they have decided to escape. I don't really want to put a light in the boxes because there is no electricity where I have them, and don't need the heat that would be generated by a light bulb. Also I am feeding Purina worm chow and I think they might not come up to eat if there is light in the box.

My question is, is there any sort of flashing or something that I can put around the wall of the box that they can not past?

I am new at this and would really appreciate any help anyone can give me.

Thanks

David Winston