The problem with only treating the snake is the cage and surrounding area will still have mites and eggs which means they will just hatch and infest the snake again. You don't have a Petco in your area? I know they sell the stuff. Its called Natural Chemistry Reptile Spray. You can also order it online at probably any reptile supply store. You can also buy Provent-A-Mite which I would imagine a reptile shop would stock as that stuff has been used a long time. Be careful with that stuff though and follow the directions perfectly as that stuff can be dangerous if used wrong.