I've read that
garlic can increase a horse's temp, therefore wasn't recommended for
endurance horses.
Kathy
Just another idea. I feed my horses everyday a
product(several brand names) that has garlic and brewers yeast. I do
not have to spray anywhere as often. I have used it for decades. I also
give it to my dog for fleas and ticks. My ferrier asked one day why is it
that my horses smell like pizza LOL It does help a lot and they love the
taste.