How to clean old Aluminum storm doors
Put on rubber gloves and squirt two to three drops of dish detergent into a bucket of water. Swish with your gloved hand in the bucket to create suds.
Wash the aluminum door with a large sponge and the soapy water. Use a nylon brush on any hardened stains such as dead bugs. Do not use a steel wool pad on the aluminum because you may scratch the surface.
Rinse the storm door with clean water and the sponge. Make sure to remove all soap residue from the door.