1. To keep your hoover performing, please clean the filter once a week (twice a week for homes with pets) and replace it every 2-3 months. Maintain the combination brush once a month (fortnightly for homes with pets) and replace every 5-6 months. Maintain side brushes weekly (twice a week for homes with pets) and replace every 3-4 months. 2. Captures dust, dirt, pet hair and small particles. 3.The roller brush does an excellent job of removing pet hair, dirt, dust and debris and is suitable for floor types such as hardwood, carpet, tile and stone. Side brushes help you reach into corners and stay close to walls and baseboards to ensure superior cleaning areas. 4.It is easy to replace and install on your sweeper. Durable material helps to improve the suction power and performance of the hoover. 5.Designed to be compatible with Roomba Model: ie Series: i3/i3+/i4/i7/i7+/E5/E6/E7 Vacuum Cleaner Robot Vacuum Cleaner.