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I heard that “B.t” is only 65% effective, yet “Dimilin” is 95% effective. Why can the Township opt for a program using Dimilin?

April 26, 2017b.t effective heard opt program Township

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I heard that “B.t” is only 65% effective, yet “Dimilin” is 95% effective. Why can the Township opt for a program using Dimilin?

1 Answer

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By regulation, on the state program, only non-synthetic pesticides can be used for gypsy moth control. Dimilin is a synthetic and as such cant be used on the program without changing the regulations. (Regulatory changes require about a 6-month period of time to take effect). Additionally, the NJDEP pesticide program also has issued Guidance on the Aerial Use of Broad Spectrum Pesticides that specifies that B.t is determined as non broad spectrum and is available for use without restriction. In order to aerially apply broad-spectrum pesticides, one must apply for a waiver to the NJDEP for an exemption.