Use no more than three standard-size sets of lights per single extension cord. Turn off all lights on trees and other decorations when you go to bed or leave the house. Lights could short and start a fire. Never use electric lights on a metallic tree. These lights with their bright colors and bubbling movement can tempt curious children to break candle-shaped glass, which can cut, and attempt to drink liquid, which contains a hazardous chemical.
Candles Never use lighted candles on a tree or near other evergreens.
Always use non-flammable holders. Keep candles away from other decorations and wrapping paper. Place candles where they cannot be knocked down or blown over. Choose tinsel or artificial icicles or plastic or non-leaded metals. Leaded materials are hazardous if ingested by children.