Indian scientists will impregnate hand grenades with ‘Bhut Jolokia’ powder to immobilize but not kill people. They say the devices will be used to control rioters and in counter-insurgency operations. Scientists at India’s Defence Research and Development Organisation (DRDO) are quoted as saying the potent chilli will be used as a food additive for troops operating in cold conditions. And the powder will also be spread on the fences around army barracks in the hope the strong smell will keep out animals. Other forms of pepper spray are commonly used for crowd control in many parts of the world.