
LP Precision Clean
www.aircraftspruce.com/catalog/cspages/lps-09-04278.php
This formula is optimized for cleaning aircraft exteriors and assemblies. Removes dirt build-up, salt, hydraulic fluid, bug debris, carbon exhaust, and grease. Safe to use on painted aircraft surfaces.
Wash Wax All (Blue)
washwax.com/collections/wash-wax-all
Great for regular cleaning and degreasing. They have a dedicated degreaser (red) that one can use on tough grease/oil messes.
Dawn Platinum Powerwash Dish Spray
Your local grocery store
It comes in a cool bottle that you can spray while sitting under the belly. The belly wipes clean in a few minutes.
GoJo Hand Cleanser (non-pumice version)
Your local hardware store/car parts store
Works great on the belly. Apply with a rag and hose it off. Cleans your hands in the process too.
Pledge
Your local store
Spray on lightly, let it sit for a minute or two, and wipe off with a paper towel or a shop rag. If there are bugs on the leading edge: spray with water to soften them up, wipe off, and then go back with a quick coat of Pledge.
Bar Keepers Friend Soft Cleanser
Your local store
Try this in an inconspicuous area as a test. One member uses this in a variety of cases where nothing else seemed to work.