Sometimes you have to create a smoke screen to gain control. The Defense Technology Spede-Heat Pyrotechnic Grenade, Continuous Discharge has not one, not two, not three, but four ports through which pelletized chemical agents are discharged, and that’s just from the top. There are three more ports on the side and another on the bottom. The grenade is specifically intended for outdoor use with a wind advantage. MSRP $34.60.