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Old 02-02-2013, 10:24 AM
G. P. Burdell's Avatar
G. P. Burdell G. P. Burdell is offline
Rambling Wreck
Location: Southeastern U.S.
Join Date: Jan 2006
Posts: 2,071
Mein Auto: E46
Which product did you buy? Most of these products, such as Einszett Klima-Cleaner, are intended to be sprayed deep into the center vent via a long tube. The idea is to deliver the foam to the A/C evaporator housing, which is where the stink originates.

After the treatment is complete, try shutting off the A/C and running fresh outside air through the vents for a few minutes before you reach your destination. Doing so helps to dry out the system and reduce the growth of the stinky microorganisms.
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