eco-friendly cabbage white butterfly repellent

... except I'm not convinced it works. I cut squares from thin white plastic shopping bags and tied them with thin wire to make little fake moths; I stuck three of these wires together into the end of bamboo stakes and planted them around the cole plants. The theory is that cabbage whites are territorial, and if they perceive that other cabbage whites are already there en masse, then they will move on. I've certainly seen one anarchist cabbage white land on the kale already. Will see if it reduces the infestation at all.