Somewhere in my internet travels, I read that MTG is not only good for re-growing trails, but will actually stop tail chewing.
I went to the feedstore today and they didn't have anything made to stop chewing that was meant to go on an animal (in other words, nothing like a bitter apple or anything like that). But they did have MTG. I have never used it before, but I bought a bottle. I got back too late to try it tonight, but plan to try it tomorrow.
I hope this stuff isn't toxic if the baby chews it? That feedstore guy acted like baby will not chew it because it is nasty, so I hope that is the case. And maybe as a nice side effect, it will keep Izzy from rubbing out her mane. I stopped my gelding from mane rubbing using fly spray, but nothing I have tried on Izzy has got her to stop mane rubbing, so maybe it will help with that too. Wish me luck!