Not so surprisingly, most hunters pick up many unwanted odors from their own vehicles and carelessly carry them into the woods.  When you are planning your hunt, clean out your travel vehicle, whether truck, SUV or car, hours before or better yet, the prior evening.  Be certain to remove smelly objects like old, sweaty clothing and shoes, leftover fast food bags, soiled rags, papers or towels, chemicals and gas cans.  Remove all floor mats and vacuum thoroughly.  Then, run the MOXY Unit in the vehicle for 15 minutes and then let it work for another 20 minutes (the duration of the MOXY Molecules produced) before opening your door.  While the MOXY Unit is at work, don’t sit around doing nothing.  Take care of other planning and organizing you must do.
For best results, take the MOXY™ Unit and set it in the passenger side floorboard.  Generally, the A/C return-air intake is on the passenger side.  Plug The MOXY™ Scent Slayer™ into the cigarette lighter (12V) and set the timer for 30 minutes.  Idle your vehicle and turn on the A/C, setting it on “Recirculation” or “Inside Air”, with the fan on high and some vents aimed down and others up and to the rear.  This enables the MOXY™ to be more directly pulled into you’re A/C System and circulated throughout the vehicle.  The MOXY™ Molecules will begin to cleanse the fabrics, ceiling and carpets in your vehicle, removing odors that would otherwise be transferred to your clothing as you drive.  Also, the MOXY™ Molecules will eradicate the mold and mildew which grows in your damp A/C System while inactive. 
If you are a smoker, you may have to treat the vehicle several times as MOXY™ will, at first, remove the dried oils and tars that form a tough, waxy surface covering the trapped, pungent cigarette/cigar odors.  Because of this, it is very likely that after the first treatment, your vehicle may smell worse as those trapped odors are released.  One or two additional treatments, at no sooner than 1 hour intervals, may be necessary, especially if you have smoked long in that vehicle and if you have fabric seats and carpeting. 
You may also try lightly spraying your seats, carpets and other fabric materials, including the ceiling, with a 50:50 mixture of ammonia and water (use Sudsy Ammonia™ if you can find it or make your own “Soapy Ammonia” – directions can be found online at http://www.wikihow.com/Make-Soapy-Ammonia-Cleaning-Solution).  The soapy ammonia water will penetrate the outer layers of the fabric, loosening dirt and oils.  MOXY™ hates ammonia and will penetrate the fabric more easily and deeply to attack the ammonia.  Once there, MOXY™ will kill all bacteria and other odor-causing microorganisms that it comes in contact with, including the ammonia smell.

Also, be sure to fill your fuel tank the day before you hunt so that you do not pick up unwanted, lingering odors at the gas station.