Timing is everything on those worms...

Ours hatched out and were about the size of a pencil lead and eating the leaves when we left on vacation for 9 days... came back and the leaves were stripped bare and they had done gone to ground! Not a worm left!

You gotta keep checking trees daily, once you noticethe leaves are starting to get eaten, it'll be time to pick them soon or you will miss out.

I got a good second crop last year too.