Growing Squash varieties late summer/fall

I've read that they have only one generation per year. I planted squash in July last year and still had all other than tromboncino and butternuts killed by borers. I planted them early this year and my plants are currently getting picked off by them. I guess their breeding is staggered or something. Next year I'm going to stick with tromboncino and butternuts. I have a candy roaster this year that hasn't been hit yet so that might be another option.

Last year there were a few butternuts on the vine that didn't have time to harden off before frosts started.

In my experience growing pumpkins the last few years, I had vine borer pressure all the way until October.

I put sevin dust on the stems themselves up to the first leaves. I see the mature moth laying eggs but haven’t lost any plants. I’m sure the larvae could go higher on the stem but it doesn’t seem like they do.