i would not use any product directly on the snake, since it is not necessary. and here accidents can happen and the snake can rapidly die from poisoning if things go wrong.

just treat the enclosure with PAM, follow the directions. (its not to be used directly on the reptile, it needs to dry until the smell is gone before you put the snake back in the enclosure). it stays active for a month, which should cover one generation of mites, so one use can eradicate the mites by killing all that are out of the egg and by sticking around intil all eggs have hatched.

to give the snake a relief, give her a bath in lukewarm water. add one tiny little drop of dishwashing fluid into the water, just to break the surface tension, then the mites will drown even faster. that should kill like 99% of the mites on the snake. provent-a-mite will do the rest.

just one product and maybe a bath, thats all you need, no need to complicate things or to add addtional risks and additional chemical exposure.

and now i noticed you last post, seems like you took good care of the issue