Article: A candle snuffer safely starves the flame of oxygen and assures the flame goes out without splattering any wax. If you do not own a snuffer, you can use a metal spoon to extinguish the flame.  Do not use water to put out a candle. Mixing cold water and hot wax can result in wax splatters and possibly burns. The cold water can also shock the glass, resulting in broken candle holders. Do not use a knife or sharp object to remove wax drippings. This could scratch, weaken, or break the glass. Before leaving the room, make sure the ember is not glowing and the candle is fully out. If there is still a bit of red ember burning, use the candle snuffer again. Do not touch the candle until it has cooled completely. If the wick is less than .25 in (6.4 mm), it is unfit for burning. The candle should be disposed of at this time. When lighting a match, run each match under water before discarding to make sure the flame is entirely extinguished. Place all previously lit candles in the sink or metal tray for extra precaution.

What is a summary?
Put out the flame with a candle snuffer. Ensure the flame is fully extinguished. Dispose of your candles and flame sources properly.