Q. I have grown tomatoes since I was a child but have never seen this — big, green, menacing caterpillars that are defoliating my plants and leaving black poop all over the deck. I looked them up on ...

Q: Tiny black insects are making lace out of the leaves of my Yellow Bells. I spray with Sevin twice a day but it has had no effect. A: The tiny black insects are actually the frass (aka poop) from ...

Two streams partially contained within a 2,400 acre area subjected to aerial spraying with insecticide Sevin showed 54.2 and 62.8% reductions in the standing crop of aquatic insects eight days after ...

Dear Dr. Dirt: Every July I get cicada killer wasps in my yard. They dig up huge mounds of dirt in my grass, which is unsightly. Nothing seems to kill the wasps. They burrow back under ground in ...

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 ...

I didn't know what a Japanese beetle was until we moved to Iowa from Kansas five years ago. I started out with the bag-a-bug and caught a ton of them and decided later that I was luring them in from ...

The following are Japanese beetle insecticide questions from the spring garden seminar March 3. Q: I saw in a catalog there was a new organic insecticide for Japanese beetles, called BT Plus or ...

A fellow gardener had a question concerning insect dust in the garden. “I use it, but the insects just keep coming. Isn’t it effective?” Yes, it is … and yes, they will! Most insect products affect ...

I took a look at my snap bean seedling recently and noticed the dreaded bean leaf beetle, a yellow-to-red beetle with black spots and a black band around the outer edge of the body. The adults feed on ...

My dog Lucy nearly died last month when she was accidentally poisoned by a common pesticide our neighbors used on their vegetable garden. Sevin–an insecticide manufactured by Bayer CropScience in ...