The prolapsed vent can be gently cleaned with warm soap and water, gently dried, and coated with honey. The honey will lubricate, protect, soothe, and act as germ killer. After lubricated with honey, gently push the prolapsed back into the vent with a lubricated finger. Keep inside in sick bay so you can make sure prolapse does not reoccur. Treat with ACV in water, and Rosemary natural antibacterial to combat any infections. I have cured several with the white discharge, a yeast infection, using this treatment. Warm baths cause birds to relax muscles, mine all LOVE a warm blow drier as well. I got my Rosemary treatment from "My Pet Chicken", and just used it as preventative to healthy flock after removing a Roo with respiratory infection. I would be afraid the Veteracin would sting, but I've never tried it.