Carpenter Bees

Control of Carpenter Bees, Carpenter Bee Elimination

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To control carpenter bees, do not concentrate on the adults.
You should treat the nest with a product which will have a long residual killing time; this kills adults and their young, as the young hatch.  If you spray liquid residuals in their hole, you may kill the female bee. The eggs are protected, however, and six to twelve months later the larva will emerge. Since liquids are absorbed by porous wood, they will be gone when the larva hatch. This means the larva have a strong chance of survival. To insure complete control, use a dust called Drione. It has a desiccant action and can remain active for several months in the nest galleries. When the larva emerge they will be killed by the Drione Dust.
Apply the Drione  with a Crusader Duster to the nest openings and deep inside the cavities drilled by the carpenter bees. This will kill any emerging carpenter bees and larva in the future.
You should also treat any wood surface that you wish to protect with D-Fense SC, Tempo WP or with Cyper WP.   Wettable powders  (Tempo WP and Cyper WP) are used extensively by pest control operators throughout the United States for most of their monthly, quarterly or once-a-year pest control accounts.
D-Fense SC is a very economical, odorless insecticide with many uses in and around the home.
These products are active against many pests including carpenter bees.
If your home has cedar siding or is a log home:
Wettable powder formulations will leave a visible residue on dark surfaces which is undesirable for some people.  Cedar and log homes may also be bombarded with carpenter bees which requires special attention.  Most of our customers who have these types of homes prefer to use D-Fense SC,  Demon EC or Cynoff EC for their carpenter bee elimination.
Carpenter Bee Kit #3
This Carpenter Bee Kit contains the necessary products for those who have heavy infestations (of carpenter bees) on cedar or log homes. Each kit contains 1 pint Demon EC, 1 pound Drione Dust, a Crusader Duster and a Dial-A-Mix hose end sprayer.
These products are also much cheaper to use when treating larger areas or where high volumes of insecticide spray is required.  When treating these larger areas (on log or cedar homes) use a hose-end sprayer for application.  This allows you to treat exterior walls with greater ease and reach higher areas without having to use a step ladder.  For severe infestations of carpenter bees on cedar and log, you will need to spray twice (2 weeks apart) the first month.  After your spray has been allowed to dry, apply your Drione Dust to all possible carpenter bee holes or entry points.  Repeat spray and dust as necessary.
Choose the product that best suits your overall needs for pest control in and around your home or business.  Tempo WP and Cyper WP are all wettable powders (powder concentrates that are mixed with water for spraying for various insect pests) which are odorless and give at least 90 day residual action indoors.  Cynoff EC and Demon EC are liquid concentrates which give about 30 days residual and no visible residue.  Mix 1/2 to 1 ounce of these liquid concentrates per gallon of water.   Mix  Cyper WP or Tempo WP at the rate of 2 scoops per gallon when controlling carpenter bee infestations; spray on any wood surface you wish to protect from carpenter bees or where they may want to bore holes and create galleries. One gallon can treat up to 1000 sq./ft. This application rate works well when treating cedar homes and log cabins. These structures are particularly subject to carpenter bees. If you tend to have recurring carpenter bee problems every Spring or Fall, may have to do more spraying. This will deter future infestations of many pests, including carpenter bees.   Apply your wettable powder insecticides once every 4 weeks in the spring when they are most active. Once a month applications throughout the summer will probably provide protection but do not forget your fall application. Although rain and humidity will break down the chemical, it is active enough so that even trace amounts will help chase carpenter bees, wasps and hornets away.