Using these floating candles is easy. Just place them in water in a floating candle bowl, or in your chosen candle holder or candelabra. They'll add a lovely touch to your spa, wedding, or dining table. When burning, keep in mind that the burn time is around 2 - 3 hours, but this can change based on where you are and the climate. As for storage, avoid leaving them in extreme heat, like in a hot car or a very warm room. If you're ordering and shipping to a hot area, the candles might be affected. So, think about these things before you use or buy them. With proper handling, these candles will last and look great for your events.