Specifically designed to be safe and non-flammable, whether it is sitting on a shelf, being mixed or being used. Provides firearm enthusiasts a safe, user friendly shot indicator for target practice using a variety of firearms. When shot with a high-power rifle it produces a water vapor and a thunderous boom. You should always check and follow all state, county, and/or local laws and regulations. Each unit contains the target, premeasured packets of catalyst, mixing container and instructions. Made in the USA.