
This kit cleans the cabin filter really well. Please note that this kit is the only kit that can successfully clean the K&N cabin air filter. Your engine air filter set does not fit. I tapped the filter to get rid of any large debris that got into the filter. I then used my car hand vacuum to get rid of the loose dirt and dust. You can use the vacuum attachment or skip the vacuuming step altogether. I did the spray and wash steps twice just to be sure because I'm allergic. I then sprayed air freshener on both sides of the filter and let it air dry for about half an hour. Air freshener helps with allergens, I don't notice anything in the car.