Gather a bucket, warm water, dish soap or window cleaner, a sponge or microfiber cloth, a squeegee, and a dry lint-free cloth
Remove dust and loose dirt from the window frame and sill
Mix a small amount of soap with warm water in the bucket
Dip the sponge or cloth into the solution and wash the glass from top to bottom
Scrub any stubborn spots gently
Use the squeegee to remove the water, wiping the blade after each pass
Wipe the edges and corners with a dry lint-free cloth
Clean the window frame, sill, and tracks
Repeat on the other side of the window if needed
Wash windows on a cloudy day to prevent streaks from drying too quickly