All wounds should be cleaned and flushed as soon as noticed, never wait as this delay in treatment can allow infection to set it. Most vets recommended creating a margin around the wound. In mammals, this is done by shaving the hair back 1/2" to 1" from the edge of the wounds. In waterfowl, poultry, and other birds, the feathers are plucked 1/2" to 1" from the edge. To avoid tearing of the skin, pluck in the direction they are growing. Once you have created a margin, remove all visible debris and tissue, then flush with saline. It is also recommended to flush with a mixture of saline and chlorhexidine or a mixture of saline and betadine. Once you have cleaned to sound properly you could slather some Neosporin on it, and you might even want to try wrapping it. It's also advisable to start an antibiotic. Do you have any antibiotics?