I am not wealthy nor do I have unlimited time to spend in my garden, an evening here and there and Sat when I'm lucky. My point is whether there is an all-purpose insecticide that I can use on veggies and flowers? Right now something is chewing on my zinnias, eggplant and basil. I cannot buy a different product for each plant. I have some marigolds planted with my eggplant but I need some spray.

Can you help?