Cleaning windows: Quick and easy – even for lazy people. Spring-like temperatures and a cloudy sky are ideal.

In summer, windows should only be cleaned early in the morning or late in the evening. And finally, of course, the right cleaning product is not always the best solution. The window cleaner often contains harsh ingredients that should not come near the seals on the windows. And there are a few more tips to keep in mind if you want to achieve streak-free window glass.