My poor Russ always has issues. This time he's managed to get what seems to be an abscess on his right hind foot. It is round, with a scab on the top, and it has started to get a bit red and puffy. I've been keeping an eye on it since the scab first appeared two days ago, and last night I rinsed it with gentle soap and warm water, but today it seems a bit worse. I've read on several different threads here and on another forum that I should attempt to open it and drain it several days in a row until it disappears. Since he is already on ABs for his URI, I am assuming there is not much more that can be done at the vet's. Does this seem right?