I have a 1982 Catalina 30 that I am refurbishing. I have definitely seen evidence of mouse excrement in the cabin and what appears to be some kind of a nest or something. I'm including a photo case anyone can figure out what it is. Has anybody dealt with this before? Does electronic sound devices work? There are small holes at the bottom of the oval compartments on either side of the cockpit I'm assuming that's how they got in. Thanks in advance.