As we have hard floor throughout the entire appartment, this works perfectly and requires only a brush cleaning with a hand vacuum after each run.
Be sure to place the screws at the correct position, otherwise either the bumper does not work anymore or you may even damage a sensor!
The solution is probably not well suited for carpets as the brush will constantly lose the dirt on it.
Hope you like it.
See also the videos here:
http://youtu.be/fXOLinF6pFU
http://youtu.be/tllY8kQf18E
http://youtu.be/5kBvAVsECFE







