Product review (5 stars): Perfect for camping.
Perfect for camping.  You will, of course, need a handle like the ones used for paint-roller extensions plus a 5-gallon bucket.  For convenience, the best adjustable handle for this with a 2' to 4' range seems to be the Wooster Brush SR090.
http://www.amazon.com/Wooster-Brush-SR090-Convertible-Extension/dp/B000CSWWE2/ref=cm_cr_dp_asin_lnk