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@heartbeat1515 it is. They bite to your clothes and one dog lost the biggest part if his ears. With all its always bleeding, bitten, hardly heals no matter what meds i treat them with.

Ouch. 😣 Have you tried putting powder on it and don't wrap it. For the dog I meant. Any unstingy powder will do I think. Hopefully there are no worms inside the wound.

I tried everything, bought all kind of expensive stuff (40 euro a month) against stable flies, gist soap, etc but it does not help. 🙁

That will stress me out if I am you. Hopefully you will find solutions soon. I'm sorry I can't help much. Never encountered this kind of problem before.