Just bought some hive on Oct. 2nd here in Mississippi and they were treated by the apiary that morning using the following for SHB :
Coral... mixed in a 10:1 ratio with SoySurf (Natural Soy Oil) as a carrier agent... We use heavy duty paper towels torn into 6"x6" squares and thoroughly soaked in this solution... place one square on the bottom board, at the rear.
Yesterday Oct.16th at around noon I placed the Freeman Beetle Traps...and 24hrs. later I took the picture below.
Chemicals do not work like this does. We all need to reconsider our methods.