Using these candle holders is easy. Just place your block candles on them and light up to create a warm and cozy atmosphere. When using, make sure to place them on a flat and heat - resistant surface to prevent any fire hazards. Avoid placing them in windy areas as it may cause the candles to flicker or go out. To maintain these iron candle holders, wipe them with a dry cloth regularly. If there are any stains, you can use a mild soap and water solution, then dry them thoroughly to prevent rusting.