While foraging, I find claims which look abandoned. Full crops sitting unharvested, beehives not working, some stuff decaying, and a few skeletons around the claim (I assume these were the owners). Some of these have gaping holes in the defenses, like the walls were never finished or had huge sections knocked down. I tried putting runestones to block the gate (so I could see if they were going through it), but if they teleport around, they wouldn't care. If the village is only slightly active, I still can't move in because the owners would still get pissed when I take their stuff.
Is there any way to tell if anyone is using the claim anymore?
P.S. Is it possible to destroy the claims, if necessary?