Thanks BB.
What product are you using? I know Bifenthrin etc are 'knockdown' agents which kill the adults, therefore very effective at certain times throughout the year. The Imidacloprid is a 'preventative' that kills the larvae so I'm guessing a combination of the 2 may be best staged throughout the year? I guess that stands to reason why Baythroid has been so successful for a long time.
Thanks,
TC.