When using the Xiaomi Robot Vacuum X20 Max to clean very dirty floors, please consider the following points:
1. If the floor is too dirty, please clean the mop regularly when mopping the floor;
2. It is recommended to use the robot vacuum for daily maintenance after cleaning the dust and garbage on the floor manually. Regularly clean the dust compartment and filter, and wash or replace the mop pad to improve the cleaning performance;
3. Some stubborn stains cannot be removed by the robot vacuum and need to be cleaned manually.