Kill weeds on your patio, paths and driveway without resorting to hazardous chemicals or a gas-powered flamethrower. Bergman?s electric weeding machine uses intense heat to burn the weeds, but produces no physical flame ? and of course needs no fiddly gas cylinder refills either. The machine heats up at the touch of a button, and you simply hold it over the offending weed until it shrivels up, cauterised right down to its roots. A cone-shaped guard ensures accuracy and protects any nearby plants. We tested it on some long-established weeds including dandelions, and they?ve never made another appearance.