Using these tealight candles is easy. Just place them on a flat and heat - resistant surface wherever you want to add a romantic touch, like on a wedding table or during a party. Remember, the burn time is about 3 hours, but it can change because of the weather. If it's really hot, the candles might not last as long or could even melt a bit. When storing them, keep them in a cool place. And when buying, think about the shipping destination's climate as extreme heat during transit can damage the candles.