Many people try to keep cats away from their Christmas tree by spraying it with citrus or peppermint oils, but this can be unpleasant for both the cats and the owners. Instead, try providing the cats with alternative sources of entertainment such as toys and scratching posts. You can also put up a barrier around the tree to prevent them from reaching it. Additionally, keep in mind that cats are curious creatures and may still try to climb the tree. If this happens, gently remove them and redirect their attention to other activities.