I have a fenceline in a wooded area. I have always maintained a trail on my side. The neighbors side was lined with planted Ash trees that were probably 40 years old and 25 ft. tall. All of the ash trees died and started falling onto my trail and damaging the chain link fence. I saw the neighbor one day and mentioned the Ash trees and he said that he tried to find somebody to clean it up but had no luck. I don't believe he has ever used a chainsaw. I told him that I could clean it up some on his side and he didn't object. I cut down many of the trees and left them.  It's a mess on his side but out of sight, out of mind for the neighbor, which is fine for me. I spray herbicide in the fenceline to keep the poison ivy and other vines off the fence but the honeysuckle is trying to get to my side. 
My neighbor probably wonders why I don't just leave it but that's not my nature, I guess. When I'm gone Mother Nature may invade my side but that day is a few years away