I have the Xiaomi one. Been using it for almost a year or even more as I don't remember when we got it. Seems it does its job as you get lots of dust and small particles in the compartment after each run. My only gripe is you still need to use a manual broom in those pesky corners or the ones behind the door if you leave it open while the robot vacuums the place. But it is what it is and it's pretty convenient. I have cleaned the sensors only once as there's a page in the app for maintenance. Haven't replaced anything yet like brushes, etc.

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