First thing, cart your compost to the dump. Wherever you use it, you'll be spreading squash bugs.

Hi thisisme ,
You are half way there, if you don't have one,go buy a cheap shop vac, water thoroughly (just as you described) and with your long extension wand (because of your back)suck them all up, sprinkle a little SEVIN into the canister and seal it back up, we can end this infestation right here and now ...

Once you get rid of your plants and get rid of the adults. Replant. Then, keep the plants under row cover while growing. Also, the only thing I did this year is dusting with diatomaceous earth when I saw some juveniles and one adult. Last year I had millions of squash bugs. With the preventative DE treatment, I had a couple if juveniles, 2 small adults, no eggs and then nothing. So, that's what I would do. I don't think the DE will do anything for the big bugs but seems to really work.
I wonder if there is a nematode that the soil can be treated with this winter, since they must winter in the soil?

They winter under litter like mulch, anything that shelters them.

John I do have a big shop vac and will give it a try. Then I will try take a bottle of SEVIN concentrate and make a drench and water the whole area real well.

tracydr thanks, I think I may dust them once they get going this time.

I mis-spoke, after you vacuum them up , dump them into a ???? anything ...ie.. paper bag,plastic bag, trash can, and then sprinkle a little sevin on them, if you put the sevin into the vacuum canister , when you turn it on, it will blow that sevin dust everywhere,that would be bad for you and the bees.

Thanks again for the great idea Jonhughes. Yesterday I manned the water hose and my son manned the vacuum. We sucked up hundreds of squash bugs. We're going to wait a few days and do it again. After that I will drench the soil and compost with Sevin and replant.