Larry from Clover, Sc 29710 writes
Which product is better for treating for Carpenter Bees or (which is stronger) -- Cynoff EC liquid or Cynoff WP powder. I prefer the liquid but will buy the strongest one.
Cyper wp is usually chosen for carpenter because the powder residue sits on top of porous surfaces such as wood while the liquids can be absorbed and are not available to the bees when they land.
Answer last updated on: 03/15/2012