Works continuously to eliminate unwanted odors. Gel goes beyond masking by permanently neutralizing tough airborne odors while leaving a pleasant scent. Great for neutralizing smoke, cooking, pets, garbage, paint and musty odors. Jar can be conveniently placed wherever strong odors accumulate, such as kitchens, bathrooms, offices, warehouses and pet areas. Absorbs odors in a 400 square foot area. Lasts up to 90 days.