Here are a few I've used and some I've heard about. On the orchards when we planted new trees, we would buy hotel type soap (small & very smelly) a bunch of wire hooks like used on christmas tree ornaments and hang a bar in each tree. I've heard also that milk mixed with water, then sprayed around works fairly well. Likely would have to be retreated after a rain. My friend has a western bobcat (bubby) and spreads his scat around his garden. What do you all use?