iRobot Roomba 700 Series HEPA Replenishment Kit Everything you need to perform regular maintenance on your roomba 700 series robot Regular replacement of the dual hepa filter every 2-3 months will maintain roomba's cleaning performance while reducing infiltration of dust, pollen and other allergens The filters are easy to see and access, so you can snap them on and off with minimal effort The replacement brushes will keep your roomba cleaning at peak performance Compatible with all roomba 700 series robots