Hello to All from Jerry F. Bacon in Dallas, Texas.  I have heard that
rodents do not like the smell of ammonia so maybe you could leave some
dishes of it around where the activity is going on, and a rodent poison
perhaps?  This brings to mind a couple of experiences that I have had.

One concerns an electronic organ that had much of the wiring eaten
away.  This was in a house in the winter time in a depressed section of
our fair city.  The owner had the temperature at about 90 degrees; it
was hot in there and my roommate had to splice and replace much of
the wiring.

This next story is true.  As some of you know I work on pipe organs
to _try_ to make a living, ha-ha.  I received a call from one of our
better builders to fix a small problem that he did not have the time
for.  The church had an organ with two 16' pedal stops, a 16' Bourdon
and a 16' Lieblich Gedeckt.  The problem was that when the Lieblich was
used and low A was played, the note ciphered (or continued to play
without ceasing).  If the Bourdon was added or played by itself, then
no problem.

Those of you with experience in this type of thing probably know the
solution.  The organ actually had only one set of 16' pipes.  The organ
was fitted with a Lieblich action which lowers the wind pressure when
that stop is used, thus giving the effect of a softer stop.  Now,
remember, the problem was only with the Lieblich, not with the Bourdon.

I entered the organ with trouble light in hand and went to the
offending note.  A _large_ mouse had died directly under the primary
wire for that note and as it was now quite crisp it was barely holding
it up.  So when the Lieblich was used and the valve was released it
would not close all the way and the note would play forever.  A simple
mouse flick with my right index finger and the problem was fixed and
I was $25.00 richer.

Most Sincerely, Jerry F. Bacon