Using these USA flag drink umbrellas is super easy. Just stick them into your cocktail glass, and they'll instantly add a festive touch. For the best look, use them in cold drinks like iced cocktails. When it comes to maintenance, they're pretty low - effort. After use, you can gently rinse them under lukewarm water if they get dirty. Let them dry completely before storing. As for storage, keep them in a dry place away from direct sunlight to prevent the colors from fading. And remember, these umbrellas are designed for adult use, so keep them out of reach of kids.