Holly branches around your planting area works. Also, these plastic spike strips are a good deterrent, but harmless. The metal ones are not recommended.
https://www.amazon.com/Touri-Outdoor-Transparent-Defender-Squirrel/dp/B08Y8MSBQ6/ref=mp_s_a_1_6?keywords=carpet+spikes&qid=1654909621&sr=8-6
Try pigeon spike strips for the wall.