Wildlife Super Charged Scent Killer Combo attacks a wide range of odors even human odor. The odorless formula fights odors at the molecular level. A heavy application works for days, it's 99% effective at stopping replicated human odor 10 days after drying. Works great on backpacks, knapsacks, dry bags, duffel bags and other all purpose sport bags. Combo- 24oz refiller bottle and 24 oz filled bottle.