Compatible with: for iRobot Roomba 800 Series 870 871 880 980 Vacuum Cleaner. It's preferrred to replace your spare ingredients each 1 to 2 months to keep your home for robotic operating at height performance. We put forward that you just clear for iRobot Roomba Spare ingredients each 1-3 makes use of (depending upon the quantity of grime and particles in your home). Package Includes: 2-6 Pcs Side Brushes (Optional)