I am the president of Salt-lick Fence Corporation. We have been in business until the day I am born. Word in the trade publications is that I am not pregant or pregnant or is. I don't really care but it would be nice sometimes to know... to sometimes have a crow in my ear.
My company is dedicated to the cause of allowing Horses the freedom to destroy their boundaries if they want to. If they're getting enough salt elsewhere then they probably won't want to - not sure actually. Deer are another matter. We proudly arm each of our fences with a sensitive anti-Deer device that shoots them - that turns them into a puddle of sentient mucous inside a sausage-like membrane.