I got my Roomba almost 2 years ago and still run it almost everyday
I LOVE it!! We lived in Georgia at the time I got it and had a terrible time with fleas which is the whole reason I bought one. I could run it everyday and it picked up the larvae and eggs and helped me get rid of my flea problem!!
The only complaint I have is it really doesn't clean very deep so I still vaccuum once a week with my regular vaccuum but the roomba has helped with both mine and Mitzy's allergies immensely!! It's fairly easy to clean and empty too
