Usually at night the dogs go quiet (ish) ..They bark at anyone walking past..Usually late drinkers going home etc..After they have gone the awful noise does lessen.Let's face it if there were intruders, after climbing over broken glass topped walls, what good are the dogs going to be locked up in a cage? What I have also noticed is that if the dogs bark, which they do constantly, no one takes any notice anyway.
Anyone trying to get over a gate or fence will usually be rumbled by the constant loud yapping..
No doubt about it.
I must admit they do make an excellent alarm system although the use of a decent air rifle is often a temptation to shut them up after the event.