With the Bissell CrossWave Cordless Max and the carpet brush roll, you can achieve optimal cleaning for your carpets. It is excellent for cleaning carpets after a small accident by your pets or for general cleaning. The bristles tackle stubborn dirt, while the powerful suction of the CrossWave Cordless Max pulls the dirt into the device. Once you have finished cleaning with your CrossWave Cordless Max, cleaning the carpet brush roll with the self-cleaning feature of the CrossWave Cordless Max is a breeze. In this process, the roll spins while you flush clean water through the machine, allowing it to be cleaned and dry faster. Remember to replace your brush roll every 6 months to ensure your floors receive the best cleaning possible.