Use a bowl of warm water put some white vinegar in. Do not do this when The Sun is shining on the window.
W/up liquid in warm water with a drop of vinegar added. Then rinse with clear water and drop of Dishwasher Rinse Aid............
Hi Mary, I think just some dawn ultra would be the best solution to wash them with.
Hot water, dawn, and ammonia! Best cleaner for real dirty windows, hands down.