Purchase a bunch of ground cayenne or chili pepper, ground cloves and ground cinnamon. Mix them together and sprinkle around the tree or bush…..along the edge of your wall….toss a bit on the bottom leaves….shake it on the driveway so they don’t get into the yard…. shake it against the trunk of the tree…wherever you need it…..it all works like a hot damn (literally)…. sends them searching for somewhere else to chomp leaves.