I have the biggest, fattest, cheekiest chipmunks on the planet living in my stone walls. If I leave the garage door open while I work in the yard, I often find one dashing out as I come in. They are not stupid. They know where the seeds are, well were (I am out of seeds and will not buy any more until winter.) I have no one but myself to blame. When we had that 4 feet of snow; I scooped the snow away and poured sunflower seeds down their hole. Now they think I am the local market.