You will probably need it in MN this year. Been real wet. I used to live there. When I was dating my wife of 46 years we couldn't park in the summer with the windows down.
The Permethrin is Surrender brand Termite killer II by Control solutions. It is 13.3%.
PBO is "Exponent" from MGK. it is 91.3% MGK is McLaughlin Gornley King. It is used to prevent immunity.
I get these on line from bugsource.
I mix 8 oz of each to 3 gallons of water. They do not harm birds. Judging from all the birds at my various feeders and having never found a dead one I think that claim is true.