Yes, I use the stuff on all except preg
mares. It works great for ticks and those little flies that accumulate on
their backs and under their bellies. It is also great behind the ears for
deer flies. I use about 1/2 on each horse..put in ears, behind ears,
chest, mane, tail, down back, under belly, on the inside and outside of each
leg. Also helps with bot flies.
Of course, nothing I have found works for
horseflies except putting them in a dark barn.
Louise, from the land of more "bad bugs" than
anywhere :)