I just was out there spraying all my zucchini and yellow squash with the Neem oil. Decided to do that right away after watering the pots (which I do every day) because I saw a Squash Vine Borer Moth flying around the squash plants. I am hoping to kill any eggs that might be laid even though again, I don't see any. But the Neem kills eggs if it comes in contact with them and it also protects the plants from Powdery Mildew. The powdery mildew has at least stopped since I started with the Neem.