Clean accessories keep your home robot performing at its best. Accessory contents are easily removed and replaced as part of routine maintenance. Cleaning accessories keep your robot clean while reducing the infiltration of dust, pollen and other into the air you breathe. HEPA filters can greatly improve air quality, reducing particle size by up to 99.97%. Helps remove household dust, pet dander, etc. To achieve the best cleaning filter effect, cleaning accessories should be replaced every 2-3 months depending on the frequency of use. new, high quality material, well made, and well matched to equipment. Say goodbye to odors, pre-filters can help reduce unpleasant odors from pets, smoke, cooking fumes and a variety of household products and chemicals.