Bissell Zing Bagless Accessory Kit, 34Z1 Accessory kit includes one dirt cup filter screen, one dirt cup filter, one pre-motor filter, and one post-motor filter. Works with model #s: 10M2 How often should you change your Filter? Having clean filters is critical to maintain cleaning performance. A dirty or worn filter can diminish the cleaning performance of your vacuum, so it is important to regularly clean and monitor them.