It is important to remember that you cannot mix the strategy of termite repelling plants and predator attracting plants
. Many plants that deter termites such as mint and garlic deter their natural predators as well. If you want to use both of the techniques, you should plant your garlic and mint in another area of the yard than you do your catnip and sunflowers. This will give you a chance to see which technique better kills off the termites. These natural gardening techniques work much better for preventing termite infestations than they do at exterminating them. Termite colonies are extremely large and it would be pretty difficult for a few spiders and ladybugs to take out every single one including the queen.