Robot vacuum

[dr. d]

I'm presently using the 1st Gen Xiaomi.

sweeper - once ko napalitan
rolling brush - twice na
wheels (yung rubber lang) - replaced once
yung 3rd wheel (sa harap) - replaced once
filter - I think 3 times na

errr...
ang daming replacement!
how long have you had it, po, and how otten does it crawl on your how-large floor?

and to skinflints like me,
do you have to replace them? puede bang linisin na lang?