I tried an Irish brand called Itchguard forgot it exact name.
It a natural product got it in Vet shop.
Seem to work for me last summer. Her top part of tail grew back and she enjoy the massage. So must be working somehow. I wouldnt say I was 100% satifised.
This year Im goint to try Neem Oil, I hope this will prevent Sweet Itch from happening cos it suppose to deter the flies.
You can search the Web, Neem Oil for Horses.
Just got mine today as in a bottle for people it can also be used on animals.
The local health shop didnt have the Equine Neem Oil products but said the bottle does the same thing just different packaging.
Will try this weekend just to be prepare, see if other flies keep away so I know that it would on the midges.
When do the midges come out.
I remeber noticing the signs in late April so that why Im preparing to start prevention treatment this month.