Keep your furMe running smoothly with the FurMe Grooming Vacuum Model FM-01 Dog, Cat & Small Pet Filters . This bundle of replacement parts is designed for use with the furMe Grooming Vacuum model FM-01 (sold separately). Each bundle includes HEPA filters and sponge filters. These filters should be replaced every 4–8 months, depending on the frequency of use, type of hair, and environmental conditions. The HEPA filters are designed to capture fine dust and dander, while the black sponge debris filters catch larger debris. To ensure optimal performance, be sure to clean your filters at least once a month, or more frequently if your machine is used often. Keep your furMe Grooming Vacuum in top shape with this convenient replacement pack.