They have yet to get another watermelon. Did manage to chew one off the vine though. I turned the cages vertical and put the rods through at an angle so they can't be lifted up. Also dumped half an industrial bottle of hot pepper flakes around the watermelon plants.

I don't plan on catching them. I've only ever caught 1 and that was by accident. If you get rid of one another moves right in so it's frivolous to try.