Aerko Clear Out Grenade (6 oz.) OC/CS Gas Tear Gas Aerosol Grenades were specifically designed to be used against barricaded subjects in indoor situations where traditional tear gas grenades cannot be used because of their high potential for fires and contamination. At the one percent level, one CLEAROUT grenade delivers enough CS to reach incapacitating level established by military tests to an area of 23,000 cubic feet (1,700 cubic meters) with an equal amount of OC. Recent tests of OC alone have established its effectiveness though no incapacitating concentration has been determined. ​​​​​​​Since aerosol valves are normally designed to work only in an upright position it was necessary to develop a valve that would work horizontally. Other modifications to the valve were made internally to speed evacuation of the can to under thirty seconds eliminating potential throwback. Features: Pull Top, Press Lock Down To Ignite, Contains No Explosive No License Required to Own 6oz of a 1% CS / 1% OC Mixture.