Big D Liquid Room Freshener features the Odor Neutralization, created with special molecular bullets that specifically target the 5 keys of mal-odors: Toilet & Bathroom, Smoke & Tobacco, Mold & Mildew, After Cooking and Pet With fresh fragrance ingredients that provides a renewing fresh and clean scent that leaves a signature of cleanliness The unique tulip inspired design adds a decorative element that allows the unit to disperse fragrance immediately Big D offers smart new way to deal with unwanted household odors scientifically With its liquid Wick Format draws on many years experiences in deodorizing and freshening It controls 2 advanced technologies to provide an effective continuous action solution in a more natural, propellant-free way that lasts between 4-6 weeks