Since he is a lighter color, you can do it the complicated way that I did.. I took my snow out and held her every night would hold her so I could look under her scales, find each mite individually, and dap it with baby oil and get it out from under her scales. o.e
OR
(the easier way.. I don't have experience, so if I am wrong, someone else may chime in)
Take everything out of her cage, toss the aspen, and bleach EVERYTHING. Keep her in a small tuppaware and treat with PAM (Provent a mite). I'd treat all the cage decor with it too after bleaching.