Regular maintenance of the brushes and filters is essential for optimal performance of vacuum cleaner robots. Complications can arise if the brushes become tangled with hair or debris, or if the filters get clogged with dust and dirt. To prevent these issues, users should regularly clean the brushes and remove any entangled hair or debris. Additionally, filters should be cleaned or replaced according to the manufacturer's instructions to maintain proper suction and prevent dust from being recirculated into the air.