short lived

I was happy to get these extractors at such an inexpensive price. They fit my 890 roomba just fine. They picked up great at first and I was quite happy. However, now 1 month has passed the rubber tread (aka grippers) has worn completely smooth on my black roller. For some reason, the gray one still looks fine. I am very disappointed and have ordered a new set directly from iRobot Roomba parts.

###

