The guy who owns the barn where I board has decided to use telephone poles for fencing. Arena, round pen, pens. Here is my concern...telephone poles are treated with chemicals that are toxic. If any of the horses chew on the poles is there a possibility they will get sick? I understand using them for the round pen and the arena because the horses are not in there for turn out and so there would not be the opportunity to chew on them, but for the pens???? What do you think?