Fill your home with beautiful rainbows! These suncatchers cling to your windows using static cling, not adhesives! This means you can easily remove the suncatchers without any residue. Want to move your suncatcher? Not a problem! Simply follow the placement instructions and you’re good to go! Note: these do require direct sunlight to produce the strongest rainbows. Non direct sunlight may produce little to no rainbow beams. Don’t know how to tell if you get direct sun? On a sunny day, if you can see a beam of light on your wall or floor, you’re good to go!