I have a patio with a bunch of containers--broccoli, cabbage, tomatoes, and some basil. There is some obvious bug damage, and there has also been some slug damage. I was going to spray neem to start with, and maybe setup some little slug traps. I wanted to know when the best time to spray neem is. . . dusk, dawn, or does it matter? I do mix the neem with a surfactant. Any info would be much appreciated.