Easy & effective
I've a Ridgeback cross that live outside and has been attacked by a black flies (only this year - 2014). I tried all sorts of remedial sprays to repel the black flies to a human insect repellent. I washed my dog regularly thinking it might get rid of the smell but it didn't work. I googled for some suggestions but none come up with Permoxin as a solution. Until I read from an ebook (I'm a new student of veterinary nursing) that Permoxin is good for dogs and horses when it comes to repel black flies. It's a great product, easy to use, gentle for the animals and it works! No black flies covering my dog anymore. Black flies are nasty.
best place to buy, very cheap
Very necessary part of our daily management of flies. Always have some on hand when we travel as it is great to keep off mosquitoes too...
I've used PERMOXIN now for many years on our dogs to guard against ticks and fleas and also on our horses and donkeys for lice and summer flies. It is both a safe and reliable product .