It is recommended that these fresheners are replaced each month to keep your machine fresh for 24 months. All individual fresheners are air tight sealed. Fits Models: for AirRam Pro Multi MK2 Vacuum Cleaner Simply slot into your vacuum for a fresh smelling and fragrant living area. Pet odours can cling to the inside of your vacuum cleaner, spreading unpleasant smells around your home as you clean. These floral scented tabs fit into the filter to keep your rooms smelling clean and fresh. Premium quality, fully / spare part