Word: methoxychlor
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Dates: during 1960-1969
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...late fall or in early spring before the buds swell. At those times, few birds are around to be damaged, and when the bark beetles start flying in April from diseased to healthy elms, they are killed by the long-lasting poison. Another help would be substitution of methoxychlor for DDT. Methoxychlor is more expensive, but it kills bark beetles just as well, and it is only 10% as toxic as DDT to birds and other wildlife...
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