We put some corn out at dusk for them. It's funny about the lights, one year we had no trees out front to put lights on, so we got a tree at a good price on Christmas Eve, staked it in place, and put lights on it. That night when the deer came around a couple of them were staring at the tree like "Wait a minute - I know about the lights, but I don't think that tree was there yesterday", lol.