@doomspaniels That’s a very good point! I’ve got chlorhexidine shampoo but I’m not sure if that would work on this issue. He had it for superficial pyoderma all over his back and stomach… do you think it’s worth a shot to dilute and “wash” the spot on his lip? It’s in such a place that he can’t lick the Polysporin/Chlorhexidine off.