Febreze Heavy Duty Air Effects is a limited edition air freshener that has a crisp, clean scent and can eliminate odors up to two times more than the base Febreze. It has a blend of lemony verbena, cucumber, and watery notes. The air freshener contains odor neutralizers that bind to airborne odors and reduce their pH value. It also has a natural propellant that provides a continuous flow of freshness without VOCs.