OdoBan Gel Crystals freshen and eliminate odors in odor prone areas, such as bathrooms, closets, lockers, litter boxes and more. Continuously traps unwanted airborne odors in the odor absorbing gel. Simply twist off lid, remove the protective seal, reapply lid and place upright in the desired area to start eliminating odors. Absorbs odors in rooms up to 400 sq. ft. for approximately 60 days. For best results, place near airflows such as air conditioning vents. Use as directed on label.