Eek. I wouldn't recommend using them as feeders anymore once you have used that on them. {{If they even survive}}. Those treatments are geared towards much larger masses, think about the amount of medication you use on a 10lb cat, and then think about the relation to that of a 30 g mouse
There are commercial treatments for fleas/mites for rodents, however I would avoid using them on feeders, because you don't know how much residue may be retained, and the last thing you want to do is end up poisoning your herps. Your best bet, IMHO, wouldve been to go with vapona
As awful as the stuff is, it is probably your best bet for feeders. Place a 1" square on (or as close as you can) the cages where the rodents cannot come into contact with them, and nobody else will be able to either (the stuff is so toxic). If there are water bowls, make sure they get changed frequently, as a residue can develop on the surface of the water. I know its too late, but maybe this will give you more idea in case this happens again in the future. Good luck.