Hi just catching up on this situation. I feel like if there is a hole from removing the infectious “plug”, that maybe packing the wound and doing wet to dry dressing changes to debride old stuff —till healthy fills in. You pack with moist, then it dries and when you pull dry dressing off, dead tissue comes with it. If you just cover a hole up, infection can re- accumulate. This is what we do in humans with infectious sores/ ulcers. Then it heals from the inside out.