Keeping cats away from Christmas trees can be a challenge, but there are several strategies that can help. Some of the most effective ways to keep cats out of the tree are: placing the tree in a secure location, placing a protective barrier around the base of the tree, and using repellents like citrus-scented sprays or sticky tape. Additionally, it's important to provide alternative activities and sources of stimulation for the cat, such as scratching posts and toys, to reduce the temptation to explore the tree.