Introducing Hepworth’s Durban Poison 1g Vape Cartridge: Live from the South African port city of Durban. Our Durban Poison Vape Cartridge is a great strain to help you stay productive throughout a busy day, hiking outdoors, or when you hit writer's block! This pure sativa produces delicious, chunky buds coated in a thick layer of trichomes that glisten in any light.