The best way to treat mouthrot is preventing it with proper husbandry. I don't believe there is a "minor" case of mouthrot as they are usually secondary to something else, often an RI. zoologicalsupply is on the right track with consulting a herp vet (never heard of Dr.Wilson; I"ll chalk that up to being Canadian
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I would like to comment on the request for an internet guide to treating mouthrot. The internet is the worst place for the inexperienced to look to treat there animal's illnesses. A great place to get advice, if you stick around long enough to know who's who, but not play vet. A perfect example lies in a previous post. Now I don't know the details on this specific case, and I'm not picking on the poster because I"m sure the story would change if he shared more detail. I'm going to ad lib a bit to make my point a little more clear. Anyways, the post mentioned a snake with mouthrot that eventually spread throughout the body and began eating holes in the animal. Lets just say that this gent had attempted to treat with topical betadine. In his experience and from what the internet tells him this is a perfectly fine course of action. So what happens, the degree of severity goes undetected, the underlying cause isn't questioned, husbandry isn't corrected, (some or all of the above) and the infection can no longer be contained withen the respiratory tract. Sepsis terms when bacteria travels in the blood throughout the body. At this stage the prognosis drops from great to poor. Still, the internet gave answers before, along with ways to circumvent "costly" vet visits, and gives answers again, perhaps warming the snake, buying online pharmaceuticals and debriding the now many abscesses that are visible. The snake dies, no one blames ill advice, the gent tried his best and writes the death off due to a stubborn disease that just wouldn't get better. The truth is that both respiratory infections and stomatitis (mouth rot) have a good prognosis when the proper course of action is taken.
I know this story isn't needed by the few truly experienced keepers among this forum (I"ll refrain from naming my favorites for I"m sure I'll miss one or two), but I'm sure they didn't get this far in my post anyways because this is already passive knowledge to them. My point is that as vast as the internet is, any valuable information is diluted by inexperienced opinions. While searching for quick internet references may be a quick answer for many people, it is not the right answer. Get proffesional advice from people who can see and examine your animal. If you have an ill pet, take it to the vet.
On second thought, my knee is sore so I"m going to type acupuncture into google and see if I can figure out how to treat it...