Fly spray that actually works? (Canada)

I use Bronco and find it is not really effective at repelling flies unless my horse is pretty much soaking in it. I heard it’s good for tics though?

Suggestions for legit FLY spray please!! Thanks

I use Bronco and find it is not really effective at repelling flies unless my horse is pretty much soaking in it. I heard it’s good for tics though?

Suggestions for legit FLY spray please!! Thanks