Welcome to Perks! Window Cleaning Ltd. During this April, we are continuing with our window cleaning service with some appropriate adjustments to continue to have employees and customers stay safe and healthy. Yes, our web site is somewhat dated, but the window cleaning trade has been not changed too much since the 1920's. We use squeegees and techniques that have a proven track record. We welcome your call and inquiries and have a live person answering the telephones during office hours. How refreshing!