Just to be clear, I am not one of these 'lazy people' and wasn't suggesting anything of the sort. I was surprised to hear the guineas were being so determined...and didn't realize the owner would be so unconcerned about what their birds were up to. Of course any type of predator has to be dealt with.
My neighbors guineas last year (most were killed by cars) he let them loose and 2 were HORRIBLE. They chased everything and would not learn for nothing the road was dangerous or that my dogs would try to eat them, they still came down all around the dogs and one of mine finally took a chunk out of one's butt. (just pulled out a clump of feathers I think)
They can be very determined creatures. This year that is only one guinea left and I told my neighbor I'm about to keep all my birds up for summer because of the gardens between mine and the neighbors, so I expect him to do the same in return with all his birds. Lets hope he actually does.