Imidicloprid is the active ingredient of lots of Bayer flower, rose, plant sprays. It has residual actio and kills Japanese beetles.
It also kills bees and wasplike insects. Since we have no more honeybees, it killed a largish black wasplike insect; correcrion, stunned, disoriented. I think the other may have been a bumblebee about 4 days after use on a rose bloom and after a rain.
I used mine all up and don't plan on buying any more but that won't help the many unknowing people who are buying it at the big box or hardware stores. Also I'm not sure about farmers what they use on the beetles when they have to spray for them and other applications for living pests.
Gaucho is bad, too, used on GMO seeds; I believe it's a neonicotinoid (sp?). So is Merit (not sure of actuve ingredient), you spray it on the ground around a bush, like a rose bush, and it gets wicked up into the whole plant. Then bad bugs and good bugs chew on it and get zapped. It also has residual action, maybe 1 to 3 months.
Merit is Bayers’ trade name for imidicloprid. Used at the high label rate as a soil drench on Hemlocks it kills Hemlock woolly adelgid for 2+ years. Also quite useful against Emerald Ash Borer and Asian Longhorned Borer.
The neonics are wonderful materials when used properly. They devastate Aphids, Adelgids and lace bugs. They do not kill caterpillars, and will cause mite outbreaks.