Broke down and bought some "Sevin"

I lost EVERY cucumber, pumpkin and other squash in 2010. THIS year, I'm about to lose two of my 7 zucchini plants to squash bugs--JUST started harvesting, too!!!
I planted white geraniums, jalepeno pepper plants and even transplanted one of my 2 foot Tobacco plants in the bed AND I sprayed with soap and hot peppers, but they're still attacking. Plus, they've started on one of my 10 foot long pumpkins. Sevin was on sale--concentrated--so I'm mixing it up tonight and spraying.
I KNOW that they leave the corn field behind me to feast on my stuff, but I've gotta reduce the population, just like my fly population has been reduced by use Fly Predators for the last 3 years.
I'll let you know how the war goes . . . . . . . . .