Window Washers....

[pdiggitydogg]

I use water in the summer...no harm

just pop the hood, squeeze the tabs together, push the washer though to the outside, fight w/ the hose or cut it (Id cut the bastard). Now take your nozzle and place it in a heavy dishwashing soap and water solution over night.
That should clean it up.
If it doesnt try an acid instead...maybe straight white vinegar.