This article is from the Watercooled VWs General FAQ, by Jan Vandenbrande with numerous contributions by others.
A: A kit to alleviate this from (313)-774-4300, which removes mildew from
evaporators. Of course first you should try spraying 1/4 can of Lysol down
the fresh air entry vent, WITH THE DOORS AND WINDOWS OPEN!!
 
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