On Feb 19, 2:13 pm, Michael Bushey wrote:
How do I clean a pitted aluminum extension ladder that is so bad it is hard
to slide the two sections up and down?

Ladders are almost never repaired only replaced. A good ladder will
last a lifetime if properly stored. I have a nice selection of
ladders. One time one of my step ladder got dented somehow and would
not sit level. I had to toss it even though it was an expensive
ladder.