Hi George, Growing up on the Texas Coast near Galveston, my Dad fought borers with every pesticide that claimed it would kill them. Once they enter the vine its just a matter of time before the vine dies. I asked him last night what he did to make all the squash that I remember eating. He said the only thing he could do was to plant in stages of a couple of weeks apart. Eventually especially later in the summer the borers killed everything anyway. The wonderful memories of that delicious food from our family garden is what has me gardening for my family now even though because of my back I do alot on gardening on hands and knees or crawling. Believe me it is worth it. My 3 sisters and my brother and I were considered by our friends to have odd eating habits because we loved vegetables. My 2 sons are the same today. By the way we did get rain in June.(.10) Happy Gardening, Allen Bastrop Co.,Tx Zone 8