You snake out of the cage and spray the cage down with Provent-A-Mite (PAM) and surrounding area. Apply Reptile Relief (RR) to your snake follow directions on bottle. Throw out all substrate clean and disinfect cage and accessories thouroughly (get the corners and crevices real good, this is most likely where eggs will be laid). After you've applied PAM to the cage use newpaper or papertowels as substrate until infestation is gone. When dry it's safe to put snakes back in. Apply RR to snakes again in 2 weeks and PAM the cage at every cleaning for at least a month. RR will dehydrate snakes a bit, make sure they have a lot of clean water.
Hope this helps.
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Tosha 
"Stupid is forever, ignorance can be fixed." Don Wood
"Of course, that's only my opinion...and I believe I am God." =) Chris Bianco
7.33.0 Ball Python (Harry and Fluffy and gang)
1.0.0 Angolan Python (Skywalker)
0.0.1 Green Tree Python
0.2.0 Feline (Pippen and Pandora)
0.0.1 Dessert Tortoise (Pope John Paul)
2.2.1 Fish (1,2,3,4)
0.0.0 Pool skimmer rescues for this season