Carpenter Bees control — prevention & targeted treatment
Carpenter bees look like large bumblebees but have shiny, hairless abdomens. They bore into wood to lay eggs, favoring bare, unpainted softwoods.
Signs to look for
- Round, clean-drilled holes in bare wood (about 1/2 inch)
- Sawdust piles under eave or deck edges
- Large bees hovering near wooden structures in spring
- Streaks of bee droppings or wood staining under holes
Prevention (starts before the pest does)
- Paint or seal exposed softwood surfaces (they prefer bare wood)
- Use hardwood or composite where bees recur
- Fill old holes promptly with wood filler
- Inspect eaves, decks, and fascia each spring
Safe DIY limits
- Fill existing holes with wood filler and seal
- Paint or varnish exposed wood
- Don't plug holes while adults are inside
Eco-friendly approach
Carpenter bee management is prevention-led — painting and sealing wood — with targeted dust application to active tunnels only where needed.
For recurring, structural, or health-risk cases, work with a licensed provider. See honest DIY vs pro guidance →
Common questions
Do carpenter bees sting?
Males hover and look menacing but can't sting; females can sting but are rarely aggressive. The bigger concern is the wood damage they cause.
Why do they return to the same wood every year?
They're drawn to the same bare, unpainted softwood and reuse galleries. Painting, sealing, and filling holes stops the cycle.
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