I am still having real success with dusting Sevin on the lower part of the stems and the mulch right around the base. I am careful to only apply it in the evenings as bees love the squash blossoms in the mornings when they first open. I am very careful to not dust the blooms as my honey bee population is really growing over the last few years and I don't want to do anything that will mess that up if possible.
I only planted four Butta yellow zucchini this year as I find them very tender and slow to seed or turn tough so they have taken the place of that long row of crooknecks I used to grow and it certainly is easier to take care of four plants as opposed to 20 or more. We find them just as tasty stewed down with onions and bacon drippings as the crooknecks and it only takes a couple of them for a good mess. I will probably have to pull at least two of them because they are making so well this year that we can't keep up with them.
I don't want giving squash and cucumbers away to become too much work.
Bill