Review on Revitalize Your Cabin Air Filter with K&N's Cleaning Kit: Sprayer Bottle Cleaner & Refresher Kit; Enhance Filter Performance; Service Kit-99-6000, 99-6000AMZ by Toby Galbraith

Yes, it works great :) It's very easy to make, the only thing that takes time. Good time :P You just have to wait for the cleaners and oil to take effect. This has restored the filter to its original condition and is working incredibly well :) Step 1: Apply Cleaner Spray K&N or K&N Power Kleen Air Filter Cleaner liberally to both sides of the filter and leave for 10 minutes to remove dirt solve. Do not allow cleaning agents to dry on the air filter. Step 2: Flushing the Filter Flush the air filter with cold, low-pressure water on the clean side to flush the dirt out of the filter. Continue rinsing the filter until all traces of the cleaning agent are gone. Steps 1 and 2 may need to be repeated Step 3: Dry the filter After washing, gently shake off excess water and allow the filter to dry naturally. Do not oil until the filter is dry. Step 4: Oil Filter. EXPRESSING THE OIL: Apply K&N air filter oil evenly to the top of each pleated filter. 3 inches apart. Leave the oil on for about 20 minutes. Touch up any highlights on either side of the filter until all areas are a uniform red.