Everyone had great advice.
Mary, we did something similiar, but not as much
work as you did.
Rocky use to try to get to our neighbors yard,
especially if they have a strange dog over.
We dug a small trench by one fence and filled it with cement.
(made it ground level, so water still can flow normal incase of rain)
On the other side of the back yard we stapled chicken
wire to the bottom of our wood fence and left
about 1 1/2 feet of it away from the fence
and than placed railroad ties over it. Sort of looks like
an L.
Both ways worked. Even though he no longer tries
to get to our neighbors house I feel much safer
knowing our yard is escape proof.
(it's a good thing my dogs don't climb or jump)