iRobot 4000 Roomba Robotic Cleaner

It does a fantastic job cleaning those dog/cat hairs and I have now had three wore one out...also purchased two for my daughters but we all continue to use other cleaner(dyson)the negative is that the batteries don't have a long life period and the filters which you must change get to be expensive. Hope this helps those of you who are considering a purchase....start with the lower end models.