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This article says that fungal sprays could kill nontarget insect species, “but most of those species people don’t want anyway.” That is a flippant way to blow off reasonable questions. “Most” means “not all,” so some of them people would want. And I would suggest that most people don’t want (don’t care about) worms or flies or dung beetles or the myriad scavengers that keep our world clean and livable.