The Mountain washer power washer is a good on-the-go bike cleaning solution, if you need such a thing.
The Lowdown: Mountainwasher Portable Bike Power Washer
The versatile Mountainwasher Portable Power Washer provides consistent, medium-pressure cleaning power when you're far from a hose bib. It works great for cleaning muddy or dusty mountain bikes when you're off-the-grid, makes for a sweet cyclocross pit set-up, and doubles as a better camp shower than the "real" ones you find in some legit campgrounds. Its quality construction, 15-liter capacity and versatile hose attachments all help make the case. But before parting with $140, you really have to be sure you'd use it enough. And to make it work, you need to be within 20-25 feet of a car or another 12-volt DC power source, like a marine or portable rechargeable battery. Those last two items add additional cost to the kit.