Yuck! It's no wonder they're all at the top of the cup--I wouldn't want to be crawling around in that mess, either!
They're about full-size now and almost ready to start transforming! We have one hanging as a J and holding still, the others are just sort of dancing and playing around (which is one of my favorite stages to put up on the doc cam because the kids think the caterpillars are dancing to our Jack Hartmann music! Count to 100 Everyday!).