PACKAGE INCLUDES Including 9 x Roomba filters replacement, 1 x cleaning brush. The i-Robot roomba filters i3 allow your machine to maintain peak performance and effectively clean up various impurities. High efficiency filter roomba replacement part is easy to install, snap into place for quick and effortless routine replacement without tools, Easy to clean dirt and debris on the roomba i3 filter with our free brush cleaning tool NON-WASHABLE FILTERS REPLACEMENTYou cannot wash the i-robot filter replacements with water. Slapping it against a trash can is more than enough to work the dirt loose. High efficiency roomba filter i3 captures 99.99% of dog hair, cat hair, debris and as small as 0.1 microns more efficiently, offer a clean and fresh air environment. It is recommended to replace the roomba j7 filter every 2-4 months, depending on your usage