I had two chickens that got mauled by the neighbors dogs. One died, but I tried everything I could in a frenzy to administer aid. I went to Tractor Supply and bought all the shit. One medication, Blue Coat, comes out in a shiny blue mist. The living chicken is still blue months later. I also later found out it had alcohol which burns on the wound. Felt bad about that, but I'm not a vet, and that fucker still lives (has a bald spot at it's neck, but meh, still covered with feathers. Hoping she's got enough to cover her for winter.) So yeah, blue coat may work, but I sprayed them with like 3 ointments and rubbed neosporin and gave them antibiotics, so who knows what helped more, and the animal will look like Wonka's Violet probably forever.