I was recently on a bike vacation and the organizers provided buckets of soapy water with a soft long-handled brush after the rides to clean off our bikes. It was a great setup, just brush the wheels, tires, and frame with the soapy brush. Takes a few minutes tops, and the grime is gone. I'm going to keep a two buckets--one with soapy water and one with plain water (each with a soft-bristled long-handled brush)--in my back yard and wash down my bike after my rides.