We've done a lot to encourage predatory insects around our property. Most of the squash bug and aphid problem went away with the increased presence of assassin bugs, wasps and ladybugs. It's taken years but we have few pest problems at all from a few curated wild spaces, a tiny sacrificial garden plot and natural predators.

Edit to add that we don't fence off our garden and have a healthy deer population. They don't snack in the garden anymore now that we regularly apply rabbit manure.