A clip on type air freshener device having a housing with openings in walls thereof permitting air flow through a cavity in the housing. A bottle that holds a supply of fragrance bearing liquid is mounted on the housing and has a wick with a portion thereof projecting into the cavity in the housing. An open ended sleeve is mounted on housing in axial alignment with such projecting wick portion and is adjustably moveable axially along the wick selectively in one position to completely cover the wick projecting portion and in another position leave at least a major portion thereof exposed to air flow through said housing openings. The wick cover is exposed through an opening in the housing giving the user a visual indication as to the amount of wick exposed for evaporation of the fragrance during usage of the device.