Haven't seen, or heard, any yet. But I know they're there. I have three cats. So it's only a matter of time before they start catch and destroy games. My hens will occasionally get one of two as well when the buggers get into the coop. I have a neighbor that feeds the birds off the porch right next to my driveway. So I have to make sure to start and drive my cars frequently. Although I might try peppermint oil on a few cotton balls. under the seats and in the glove box etc this winter when I am not driving them as often. I heard this can work to keep them away.