Tips for effortless cleaning of double pane windows
Drill a 1/8-inch hole in the top corner of the window. Do this slowly and cool slightly with water while drilling. You should also do this inside the window.
Drill another hole, the same size and using the same method, in the opposite lower corner of the window. The idea is to allow any fog or condensation to escape between the windows.
Take part of the plastic tube and insert it into the bottom hole of the window. Make sure the window has enough tubing so that the liquid can flow out of the window and wrap the lid around the hole in the window.
Use a dental water jet or funnel and more plastic tubing to spray the inside of the glass through the top hole with alcohol or glass polishing solution. Rubbing alcohol is stronger and will remove water stains better than rubbing alcohol, but rubbing alcohol is cheaper and easier to use.
Allow the bottom hose to drain the liquid while cleaning. If that doesn’t work, try connecting the hose to a small wet/dry vacuum cleaner. Once you’re done, let the window dry for a few days.