Now would be a good time to brake the "in case of zombies" glass...
Mehh, Zombies or Mice either way I'm breaking out the shotgun
Source or gtfo
Depending on where you live. Could be Roof Rats Racoons, stray cat. They are the only climbers.
I'm on the third floor of a six floor building. I'm fairly certain it was mice but I haven't heard anything else since that night so I guess we'll just wait and see
sorry I thought I had fully killed that one guy and I didn't know it was your attic that i stuck him in...