Smaller versions of this can be used very effectively for killing weeds without herbicides; I've had endless hours of relaxing weed-burning fun with a Weed Wand. I've also used something similar to the largest kerosene burner pictured in the "see why no other gun can compare" section to sterilise earth after an area of lawn had been lifted. Even more fun, in a "I can destroy anything with this!" kind of way.

Never ever considered using one to melt snow though...