We've been having squirrel problems. Specifically, the squirrels are picking and eating our tomatoes just as they ripen. We started picking them just before they were ripe. The squirrels seemed to catch on and started eating them sooner. The straw was when Rob came home one night and they'd left a partially eaten heirloom tomato in the middle of the driveway.
So Rob did this:
If it's not clear, he built an 8-foot high structure, netted it, and netted the top. Then he also put cayenne pepper all around the bottom. If that doesn't work, he's threatening to buy heavy artillery.
On a more positive note: baby melons!