OC is derivative of hot red cayenne peppers and is the newest defensive spray agent. It is not an irritant like the tear gases, but an inflammatory agent. Contact with mucous membranes (eyes, nose, throat and lungs) will cause immediate dilation of the capillaries of the eyes, resulting in temporary blindness and instant inflammation of the breathing tube tissues cutting off all but life support breathing. OC will not deteriorate with age and unlike the tear gases, will not cause any lasting after effects. Because it is an inflammatory, rather than an irritant, OC is effective against all those who feel no pain such as psychotics, drunks and drug abusers. OC has proven itself to be the absolute best deterrent available for attacking dogs and wild animal control. Another major advantage of OC is that it is not volatile and will not give off a lot of fumes like tear gases.