As much as you’d like to cut costs by going down the DIY route, there comes a point in time when doing a professional’s job simply isn’t good enough. What seems quite simple to achieve, cleaning windows can pose their own set of challenges if you want them to sparkle. Not only can you easily leave unsightly streaks and miss dirty spots without meaning to, there are certain signs that you need to keep in mind when trying to figure out if you need professional help.
