The Guard Dog 1/2 ounce 3-in-1 ingredient pepper spray carries all the key ingredients to stop any attacker in their tracks. Three-in-one formula contains 18% OC as well as military grade teargas and a UV marking dye to identify the assailant later. This convenient spray comes with a built-in key ring for ease of use. Used with the highest grade formula and labratory tested for no-leak and optimum efficiency. The easy twist-top makes it quickly accessible when needed – just twist and shoot! Small, mini, and compact to fit in your purse, pocket and on your keychain.