Sand is cheap. You could fill the column with sand and cap it with a little Sackrete.

n a small American town, a band of squirrels had become
quite a problem

The Presbyterians called a meeting to decide what to
do about their squirrel infestation. After much prayer and
consideration, they concluded that the squirrels were
predestined to be there, and they shouldn't interfere with
God's divine will.

At the Baptist church the squirrels had taken an interest in
the baptistery. The deacons met and decided to put a
water-slide on the baptistery and let the squirrels drown
themselves. The squirrels liked the slide and unfortunately,
knew instinctively how to swim, so twice as many squirrels
showed up the following week.

The Lutheran church decided that they were not in a position
to harm any of God's creatures. So, they humanely trapped
their squirrels and set them free near the Baptist church.
Two weeks later the squirrels were back when the Baptists
took down the water-slide.

The Methodist church tried a much more unique path by
setting out pans of whiskey around their church in an effort
to kill the squirrels with alcohol poisoning. They sadly
learned how much damage a band of drunk squirrels can
do.

But the Catholics came up with a more very creative
strategy! They baptized all the squirrels and made them
members of the church. Now they only see them at
Christmas and Easter.

And not much was heard from the Jewish synagogue. They
took the first squirrel and circumcised him. They haven't
seen a squirrel since.


I unashamedly copied this from another site. Hope it helps!!!!

So they go in and can’t get out? I like it. They can’t chew through the concrete block. So if they get in they are done. I think I will slip some poison (mentioned above) in too so they will have a snack