iRobot Customer Support

I've had the Roomba robotic vacuum for over 6 months now, and it's time to get some new filters. I called customer support and talked to a very nice man who helped me place my order and even get some free replacement brushes since mine had worn out too soon. Well, a few days later I got a package in the mail with not only the 3 filters I ordered, but a super duper iRobot cleaning tool. What can I say? I'm impressed. As any Roomba owner will know, after a few cleanings, long hair and carpet fuzz gets all wrapped around the main brush as well as in the two bearings. This tool with it's small comb, pick and embedded knife make for a perfect companion for cleaning every so often. I really get the feeling the iRobot people are thinking about me, their customer and this is a good thing. P.S. If anyone can tell me what the two little holes are for, I'd like to know.