I got rid of all my geldings because the mares are much less destructive and easier to deal with. Most of our geldings did damage to our fence in one way or another. One let all the horses out on numerous occasions including lifting the handle on an electric fence. He ended up killing himself because he somehow opened his stall door (it takes me 2 hands to open them), then opened a standard door in to the tack room, and then moved a heavy steel gate in front of the 55gallon drums of oats. He ate about 2-3' down in to it over night.