That's a good one. It's very powerful stuff and they don't like it. We used it in a whole to keep our dog from digging in it. We saw some sparrows fly in to get some sunflower seeds someone dropped on the ground there, and they popped right back out because of the pepper.The Shirt said:I've tried cayenne pepper on the leaves of tasty plants to deter the critters. Must reapply after the rain though.
That reminds me - we also grew sunflowers one year. They were great fun to grow, and the seed heads are huge.