The borers are a huge problem. We lost several plants, but the issue is that they also weaken other plants and make them more susceptible to squash bugs.
I did have a few squash that seemed to be unaffected, and they were winter squash far from the outbreak.
A couple ideas:
First is trap plants. Short version, use some early flowering squash and transplant them so they are in that stage before the other plants. Place them on the corners as those are the most commonly affected. If you are doing a traditional squash patch you need only check the corner trap plants, the others are often left alone. But you need to check them every morning! If you are a bad person you can treat these corner plants with something nasty that kills the borers applied at the base. If you remove dead leaves the squash bugs tend to be easier to find near the base.
Second is make sure your minerals are very high. Silicates are important, I use a mix of
DE and rock dust and the leaves are DARK green and firm, not like the ones I used to grow which were bright green.
Third is don't clear around your squash too much. Leave habitat for spiders and
ants. The spiders seem to keep the larger insects down, the ants eat eggs and nymphs.
Lastly, save seeds. I am not even trying to grow specific varieties anymore. Check out Lofthouse's postings on
landrace growing. I am working through Carol Dieppe's book too. I think this is the longer term
answer. So far the winter squash are producing but the summer squash have been hammered. I intend to work on a summer squash that will perform here.