Cousin of the Pine Marten, Beech or Stone Martens are the bane of village life out here in the Carpathian Mountains of Eastern Slovakia. They plague attics and cause a lot of damage. My garden is littered with large chunks of roof insulation and their scat is everywhere. Also, they run around all night which echoes across the ceiling. They’re also extremely aggressive and will hiss and scream. The sound of them catching their prey, and its screams, a few feet above your head at 3 in the morning is a shock.
After months of problems capturing the marten on the trail cam as it was aware of the infrared, it seems to have become adjusted to it and I finally managed to get some good footage. It’s winter so the marten is redecorating my attic to make a nest. And shitting all over the place. Very thoughtful of it…
Carpathian Adventure 
That was good footage! I wish you well in your battles against marten shit.