Question: Several of my perennials and tree's leaves in my backyard get leaf miners every year. I've tried many insecticides (the latest was Sevin powder) already, but they don't work. Is there ...

Dear Neil: I know you don't favor Sevin insecticide, but it did a really good job of controlling June beetles that were stripping the leaves off my bur oak tree a couple of years ago. All the damage ...