Preventing Squash Vine Borer Problems
If you are trying to minimize the impact of the borers in your yard you can try a fall crop. Plant squash by seed in July so when the plants are up the adult borer is gone from the area.

Cook The Suckers
To significantly reduce your garden's squash vine borer population over a 2- to 3-year period, use the crop cleanup trick. Pull up the crop vulnerable to squash vine borer as soon as they finish bearing and put the plant or the vines into a large plastic bag, preferably a big clear one if you can find such a bag. It is important that you don't wait till the very last squash or cucumber has been picked. Pull the plants when the main harvest is over and the plants still have a population of squash vine borers. After tying the bag, leave it in direct sun for a week or so. Nothing will survive that treatment, and a major source of next year's squash vine borer population will have been destroyed.

Attract predators to your yard -Flycatchers, barn swallows, downy woodpeckers, sparrows, blackbirds, grackles, and phoebes are some of the common birds that relish eating squash vine borers and the mother moths. Moles and toads will also go after borers. Wasp parasites kill the larvae and lacewings, spiders and ants eat the eggs.