Electric fence? Bitterant? Maybe some of those bird-prevention spikes that get put on trees or buildings in cities? Re-route the cable through steel conduit/ele

Electric fence? Bitterant? Maybe some of those bird-prevention spikes that get put on trees or buildings in cities? Re-route the cable through steel conduit/electrical boxes? Armored cable? Motion sensitive alarm/lights/water spray? Really depends on your budget and how silly/effective you want this to be.