nak. oooh, it will work on squirrels too?! I am sooo going out today and buying flats of peppermint plants. the squirrels around here are evil and not afraid of chewing an opening into your house. One day a squirrel attacked a friend of mine...just jumped at his head...we teased him telling him his peanut head confused the squirrel and squirrel thought that he was a walking peanut, lol.