When cleaning windows that haven’t been cleaned in a long time, it’s important to tackle the dirt and grime effectively. We start by removing any loose debris like leaves and twigs. Next, we prepare a solution of water and our window cleaning cleanser. We apply the solution to the windows using a sponge or microfiber cloth on large windows, or by pane on multi-pane windows. We use a squeegee to remove the cleaning solution, along with the dirt and contaminants. For stubborn stains, we may consider using a non-abrasive scrubbing pad.