For ramp washing---indeed all washing---I use a product called Wash &
Wax, available at every pilot shop I have been into. Uses no water, and
is probably chemically identical to Pledge. There is also a "heavy
duty" version that does a good job cleaning the belly when combined with
some elbow grease and human lubricant (beer---after flying, of course).

Beech Super III

Glad to see you decided on a Mouse! Hopefully it will keep a couple of
bucks in your wallet. If you haven't yet, come over to
http://www.beechaeroclub.org.