While not toxic to people or most animals, pesticides to protect spruce and fir trees against budworm could also hurt the caterpillar form of two threatened butterflies. Spraying supporters say plans call for a targeted approach.
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While not toxic to people or most animals, pesticides to protect spruce and fir trees against budworm could also hurt the caterpillar form of two threatened butterflies. Spraying supporters say plans call for a targeted approach.