OC is an inflammatory agent found naturally in cayenne peppers. OC repressant produces an immediate closing of the eyes, uncontrollable coughing and gagging, and the sensation of intense burning to the skin. In 1989, the FBI tested OC on 828 individuals and certified it as safe for its agents. Police officers must understand the process of escalation to know when the proper time has arrived to use such a device. Police officers should hide the movement of the canister. The burst of spray should be for the minimum length of time needed to establish control. After spraying, the officer should move laterally in case the suspect continues to attack. The most effective range for spraying is 3-6 feet. First aid and decontamination should be provided to the person sprayed. When carrying, transporting, or storing defensive aerosol devices, police officers should avoid exposing canisters to extreme temperatures or moisture and should keep them free of dirt and lint. They should also recognize the limitations of the devices, while recognizing that OC has proved to be reliable, safe, and effective. Photographs