I'm about 1 to 2 thousand miles from the sea...depending on which direction you travel. But having parents live in coastal NC I have seen this salty mess first hand. I know a guy who made his own mix from 75% water 25% Alcohol and a few drops of dish soaps. This was applied with a lambs wool type wand and then cleaned up with a squeegee.
That's the best window wash I have found too.
THIS WORKS AMAZING TRY IT!! Need: ....couple drops (yellow) JOY DISH SOAP, 1/2 cup CAR WINDOW WASHING LIQUID, gallon warm water.....MIX TOGETHER...WASH WINDOW...take ONE SIDED RAZOR (slide across window, I usually start at top 10 in. down, then across), take WASHRAG or CLEAN RAG WIPE WINDOW ..USE SQUEEGEE....WINDOWS NOT ONLY DON'T STREAK THEY SHINE!!! NEVER SEEN ANYTHING WORK SO WELL!!!
down all the way across