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Dear Alice,

My question is about those straw belts that get wrapped around the trunks of pine trees a meter or so above the ground. I know they have something to do with fooling insects into laying their eggs in the straw instead of the bark, but could you give us more details? For example, what the heck are the belts called? When are they applied? What beetle or disease is involved? Most importantly, is this technology exportable and would it help my sister in Colorado save her pine forest?

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