My sister used to make Tofu, and since she was vegetarian (she is in Heaven now) she called Tofu "natural." It took at least a dozen processes to turn whatever one starts with into tofu and then she'd bake and mix it with other stuff before serving it as a natural food. I'd ask her for a definition of natural and basically for her it meant vegetarian. I pointed out into her yard at a rabbit hopping around one day and said If I were to be able to catch that rabbit and know how to kill it and saw off a leg and cook it that would be natural, but there is nothing natural about this. Same sis also got into selling "natural vitamins" at one point. The makers of these vitamins claimed that they had discovered a place on earth where God's flood didn't touch and these drugs were made from plant derived material from there. They didn't even hint as to where on the surface of earth that spot was, but seemed to believe it! I am only spouting off, and have no idea whether your bug killer is environmentally friendly or not.
Der Fish