I've been having problems with flea beetles on my eggplants and green worms on my broccoli. I've sprayed neem seed soap recently, it worked for 1 day, killed the bugs but more where on my plants the next day. I've tried garlic and water on my eggplant and that kept the flea beetles away, again only for 1 day. Does anyone know of a good organic way to keep these bugs off of my plants?

Thanks in advance