I manage to clean my bike about once every 3 months. When Saturday morning comes, I tend to sit around and drink coffee for way too long, then I ride, and then by the time I get back it's time to do other things. Then on Sunday I do my long run, and after that laziness sets in. So yeah.... my bike doesn't get cleaned very often. I too only ride in nice weather. Maybe I should ride this weekend when it's raining, then it will get clean... sorta works for my car, anyway.