I got my dressage top hat from www.hornetshats.com. They were the cheapest Christys hats I could find online & great service. I didn't dare use ebay in case it didn't fit!
I always used to feed garlic granules to all our horses for respiration & fly prevention but now have stopped using it on one as he suffers with a sensitive digestion. It can affect horses the same way it can affect humans - like onions! You can buy granules in big tubs from places like...