We are in the process of putting up deterrents around our house for long term. Along all the borders, I have planted duel purpose Blackberry bushes and Raspberry bushes, with the biggest thorns we can find. We find fences and hot wire to be helpful as well, if you get a hotwire box with a strong charge for enough mileage and put it around a smaller acreage it stinks if you tap it. I also have some wild geese that think they are chickens. You want a good watchdog, and mean…go for a goose. Also dogs. After a collapse of society, I have more ideas, and the fishhooks are great. We have plans to hand them inside. They may not stop anyone, but we will hear them yell. We have had lots of theft on our property because we live way up in the mountains. My animals are the best at early warnings.