I'm not aware of any fully successful other way then having a Professional take care of all the little varmints that are new to many from the north. Our guy, a one man band comes our every other month and sprays inside and puts granules of something outside. $65 per treatment.
It is not risk free to use this service, chemicals are used. Before I hired him 4 plus years ago we had several roaches, tiny ants, bees etc. Within the first 2 or 3 visits he got rid of all of them.
I looked at the product safety sheet for each thing he uses and felt comfortable with the treatment instead of blood curdling screams from my poor wife. She freaks out. Many people also take care of these little PIA'S themselves with stuff from Lowes. Not my thing to handle.
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