Mark from Washington, Nj writes,
Have a carpenter bee problem on my siding - Cyper, Cynoff, Demon, etc. which is the best choice?
Demon WP, Cynoff WP and Cyper WP are all pretty much the same product though each brand is made by a different manufacturer. These products all contain cypermethrin which is known to do a great job eliminating carpenter bees. We currently offer Cyper WP in our carpenter bee kit because it is the most economical choice. Our carpenter bee kit contains D-Fense dust to dust the existing holes and kill the bee larvae, a Centro Bulb duster to apply the D-Fense dust, Trebor plugs to block the holes so new insects can't move in later and Cyper WP to apply topically to eliminate existing bees and stop new bees and other insects from invading your home.
Answer last updated on: 04/22/2012