I had those bugs and I was told that they *really* love to eat slugs and decaying potting soil/organic matter
I bought BATS=Bayer Advanced Tree and Shrub. It is a systemic insecticide and is only to be used on plants that either do not ever go outside or that you can keep from blooming while out there. The poison in systemics goes throughout the cells of the plant and anything that bites it or sips it's nectar dies. It is supposed to last for a year in the plant. I know that it is the only thing that works on every kind of bug that bothers my plants - even root bugs. And it is the only thing that could get rid of gnats in my house that were breeding in my pots
