With Mystery Fire flame colorant salt packets, you can transform any wood-burning fire indoors or outdoors into rainbow-colored flames. Simply toss 3 to 5 unopened packages in, then watch as flames turn blue, green, red, purple, orange, and yellow. Mystery Fire color fire packets are only appropriate for wood-burning logs. Do not open the packet before throwing it into the fire. Contains chemicals that may be harmful if misused. Not for use by children except under adult supervision. • Age Grade: 18+ • Product Dimensions/Weight: 4.0 L x 2.5 W x 0.03 H / 0.05 lb • Inner Pack Dimensions/Weight: 9.4 L x 7.7 W x 2.8 H / 3.1 lb • Made In: China • Batteries not required