where they enter or exit the floorboards
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So they are coming through the floor or the wall, just to clear my brain?
If it's through the floor put up a fold over tube orange cone and an electric fence. Feed the wire through the cone and then to you speaker. Silicone the cone to the floor. The electric fence is for the real hard headed kids. Let um fry for a bit. little turds. :-)
Merry Christmas.