Tea tree oil all over the tail! Tastes disgusting!
Or BABY OIL the tail to death!? - can't imagine it being great to bite!
Not sure on this one but what about a no bite spray? Like NAF'S for cribbing etc?
No idea if it is even safe on horses tails- guess it would be? But double check!
Maybe a puppy NO CHEW spray? Or fly spray with vinegar all over the tail perhaps?
Out of ideas!
I wish you the best of luck!
Oh-- another idea! Bandage the tail? or put a travel guard on it?