A few things to try to get over on the squash borer:

1. Exclude the adult moth--orange and black with clear wings and black stripes on the abdomen--with a fleece barrier over the plants. (But fleece must be removed to allow pollination.)

2. Delay your planting so that the feeding larvae have no plants to attack -- borers usually lay eggs around July.

3. Plant early varieties so that the plants are larger in July and can withstand the attack.

4. Clean up and dispose of vines after harvest so that insects are not overwintered in your garden.

5. Rotate crops so that a particular area of the garden does not become host.

6. Slit the vine stems, remove the borers, and cover the wound with soil.

Here is a link that might be useful: HarvestToTable.com

This site has helped me eliminate my squash borer problem. I use the suggestions that are easiest for me to implement. Why don't you take a look?

Here is a link that might be useful: Squash Vine Borer Control