They are probably coming up to say Hello. Quick shut the lid.

More food at the top -- too wet at the bottom. beegood could be right. :)

I usually have some crawling about the sides when i lift the lid, but if there's any standing water in the bottom it's too wet and add some shredded up newspaper. And say hi back :)

Well, DH says the worms have gone back where they belong.

Maybe they wanted to meet their owner, finally realized that just wasn't ever going to happen, and went back to their normal routine. I wonder if maybe DH just caught them when they'd finished eating and not gone back where they usually are.

Thanks for responding =:)