If you ride in the Winter when/where they salt roads, the salt will destroy stuff pretty quickly. Regular hosing off helps, but finish with a Spring cleaning consisting of a heavy duty washing of all places salt can get to.

Use of products like LPS-3, and other oil/wax products during assembly also helps prevent salt water from wicking into the crevices between attached parts.

As a scuba diver, I can tell you that it's best to remove salt while parts are still wet. Once salt dries it's much harder to re-dissolve and remove.

BTW- so far, I haven't found anything that's an aid to salt removal (other than lots of water). When doing my annual dive equipment service, I end up having to toothbrush off dried salt deposits.

Maybe someone here knows of something that can be added to rinse water to speed salt removal.