Freshworks is the most powerful and effective eliminator of all those "living odors" found in cars, trucks, RV's and boats. Freshworks works by enveloping the living quarters and saturating them with ozone - it eliminates the source. Portable unit can be plugged in to any 110 volt outlet. 110 Volt unit can be turned on and left unattended. 6 foot cord can reach almost any area.