For use with pet odors, smoke and tobacco issues, problems in the bathroom, or sickroom. Issues regarding musty odors in closets, vehicles, or anywhere old or stale odors occur. Re-occuring odors in the litter box, or with other pet problems are easy to fix with this size Nok-Out. This popular size is easy to carry with you to places anywhere unpleasant odors exist. Just spray your problem away with Nok-Out!