Susann wrote:What type of BTS is he? How long have you had him? Was this your first visit with this vet?
I'm asking because there is a certain illness that can affect the gigas species that sometimes gets misdiagnosed as mouth rot but often involves digits/feet and eyes as well as the mouth. In that case antibiotics rarely do much, if anything, to improve the condition but is often due to humidity being much too low.
If we could see pictures of your skink we may be able to tell you if it looks like this may be the case.
Otherwise as to your question, I might suggest you call the vet's office to see how far he wants you to dilute the iodine, but generally for reptiles I believe you dilute it 10 parts water to 1 part iodine.
Here's a somewhat recent thread where I talked about what could be done if it is this other condition, but please don't be discouraged by the title and beginning of the thread, just keep reading
viewtopic.php?f=4&t=25207#p452585
He's an Irian Jaya.
I've had him since May 10, 2014.
He's always had slight redness on the corners of his mouth and I figured it was just scars or something because he was not cared for well in his previous home. his eyes started to water(not crust) and his saliva was thick(but still clear).
Yep, my first visit was last week and I called to say his mouth wasn't completely healed and they put him on another week of antibiotics.
I looked through the thread. His mouth isn't yellow, and nothing is crusty at all. Also he hasn't had any twitching at all. He acts really normal, actually. Basking, eating, drinking, attitude, everything is still the same. I can see how my humidity would be down, as he's only on Aspen. I kind of figured since he has no trouble shedding, his humidity must be fine. I'm going to try and figure out how to add pics now. Sorry, I'm a bit new!!