Maintenance - Keep your robot operating at by changing spare parts every 2-3 months, depending on your use frequency. The Adaptable Accessories Kit is designed to meet the maintenance needs of your home appliance. To that the performance of your vacuum robot is not impaired over time, we recommend that you replace the parts on a regular basis. Performance - Dual Multi- Rubber Brushes is Uniquely designed with rubber treads to hug different floor surfaces, removing everything from small dust to large debris. High-efficiency filter maintain for 's cleaning performance while reducing infiltration of dust, pollen and other allergens. Each dirt disposal bag holds 30 bins of dirt and debris so you don't have to think about vacuuming for weeks at a time. The side brush penetrates into corners and edges to keep your floors tidier. The mop cloth has good softness, while cleaning the dirt, it also protects the floor from being scratched. Self-Cleaning Rolling Brush - Self-cleaning rolling brush