Tip #1 Call Joe at Prokleen
Tip #2 Homemade Window Cleaning Solution
You could make your own window cleaning solution with some white vinegar, as its acid can remove grease. Clean the surface initially with a cloth or paper. Then rub the vinegar in to the window with a clean cloth. Use about 10ml of vinegar to 100 ml of clean water. When you finish, rub the window clean with another clean cloth. Joe uses lambswool for this.
Tip #3 – Rinse tracks and frames with plenty of water to remove grime and grit and prevent build up and blockages.