I've been using Ozium Air Sanitizer lately and it's really good.

 

Honestly, nothing, and I've been complimented on how my cars still smells brand new in my '01 and '08. The only product I use on my interior is Meguiar's Natural Shine on the dash and plastic bits, maybe 2 times a year max. Every other time I just wipe the dust with a dry microfiber. I leave the windows open every once in a while when It's parked in the garage. Other than that I don't do anything, never even bought one of those air freshener trees.



Some people think I'm odd about cleaning my cars though. I don't even use window cleaner to clean my windows. I just use the chamois I used to dry the car to wipe the interior glass, then clean the leftover water droplets and residue with a dry microfiber.



The only interior product I use, it smells decent and leaves the dash looking new without being overly shiny, and no greasy residue.

 

I fart a lot. Smells like roses 'cause I had an electric car.

















[Waits for people to get the South Park reference]

 

^ lol I got the reference, but first thing that came to mind was Outkast.



[media]http://www.youtube.com/watch?v=gWju37TZfo0[/media]

 

I use Chemical Guys' New Car Scent air freshener.