after trying various bumble treatments-this i soak in warm water, epson salts added if you have it, then after patting dry i put ichthomal drawing salve, it is sold for people, but also sold at the feed store for horses hooves it will draw the infection to the surface, i put gauze, wrap with vet wrap, and i add duct tape to make sure it doesn't come off. Then i give 250 mg fishflex(cephalexin fish antibiotic targets staph) you can get it in the aquarium supply section- orally, change dressing daily and you will see it heal from the inside to the surface- once done make sure to give probiotics to restore the good bacteria in the crop. I do wrap the bird in a towel mostly because my roo has sharp toes what has worked