I’m currently battling a little bug that is eating my sweet potato vines in a couple of containers. I fill a pitcher with water, add a healthy amount of dish soap and little bit of vegetable oil. The vegetable oil helps the solution stay on the leaves. Then, I coat the tops and bottoms of the leaves. It also works on aphids. When I’m trying to keep rabbits out of the garden, I add a little bit of red pepper to the mix.