treating minor aluminum corrosion ??

[supercub43]

Found a critter nest in my Kitfox wing. I believe mice got in the wing. I cleaned the nest out and wiped down the aluminum spar with MEK. There was a little bit of surface corrosion which I took care of with a scotchbrite pad. Fabric will be partially wrapped and glued to the area. I'm looking for suggestion on what to treat this area with. I don't want to paint it, prefer to keep it bare metal.
Thanks
Brian

[Tom Downey]

Alodine 1200 from AS&S first etch it with Aluma-prep. from the same place.