We have had the same problem. Shock collar is the best answer.
FYI, our neitghbors have an invisible fence. In the two years that we have been in this house, they have never broken through the Invisible fence. That was until this past April--and their Jack Russell broke through and managed...
Hello-
We have 5 2 month old chicks -2 americanas, 2 Polish, and one SILKIE. I know the silke is heat sensitive , the others seem to be suffering in the heat as well (beak breathing heavily, runny stools). What is the protocol when it gets this hot? Don't laugh-I have been bringing them in...