In case your search doesn't turn it up. This document is the BIBLE of Nix treatment. By the way, snake mites are specific to snakes only - your Sav cannot contract snake mites. If he has mites of his own, it may not be possible to treat him with nix... I'll leave it to the lizard experts to tell you what best to treat a sav with.
Also, you will NOT get rid of mites with one treatment, even with nix. Look forward to several weeks of repeated treatments. Also, make sure you nix the cage thoroughly.
Hope this helps.