Why continue with a policy that isn't working, and by your own admission hasn't worked for the past 15 years? You're wasting your time.So back to shoot on sight policy for me then
Not that o expected that to change!
The only policy that's going to work for you is engagement with the neighbours. If that's also failed for the past 15 years then perhaps it requires someone with a touch more tact and diplomacy on the job?
Or legislation.