Talked to a friend of mine who is a vet and she recommended hydrotherapy... spraying wound for 10 min twice a day with a hand sprayer... to stimulate regrowth of tissue.
Wish my water pressure was better...
Call her back and explain that poultry pus is not like mammal pus and that it needs to be physically removed. Cats, dogs, horses, etc, those I just lance and flush, but chickens are different.
-Kathy