To keep carpenter bees away effectively, consider the following expert- recommended methods:

Wood Treatment and Protection

• Paint or Stain Wood: Carpenter bees prefer untreated or weathered wood. Applying paint, varnish, or a clear sealer to wood surfaces deters them from nesting because it makes burrowing difficult. Even a glossy paint or high-quality stain works well. Regular maintenance is important to keep the protection effective

• Use Hardwood or Synthetic Materials: Carpenter bees favor softwoods like cedar, pine, and redwood. Using hardwoods such as oak, cherry, or ash, or synthetic materials like vinyl or Trex for exterior woodwork reduces attractiveness to carpenter bees

• Seal Cracks and Holes: Fill any existing holes, cracks, or pits in wood with wood filler, steel wool, or caulk to prevent bees from using them as starting points for nests. Make sure to clear out larvae before sealing to avoid attracting woodpeckers

Natural Repellents

• Almond Oil and Citrus Oil: Spraying a mixture of almond oil and water or citrus oil on susceptible wood areas deters female carpenter bees from nesting. These oils have a strong repellent scent that bees dislike. Reapply several times during spring for best results. Applying oil directly into existing holes can encourage bees to leave

• Peppermint Oil: Similar to almond and citrus oils, peppermint oil can also repel carpenter bees when sprayed on wood surfaces

Other Preventive Measures

• Fake Wasp Nests: Hanging a fake wasp nest, such as an inflated and tied paper bag, under eaves can discourage carpenter bees from nesting nearby, as they avoid areas with wasps

• Noise and Vibrations: Playing loud music or hanging wind chimes near nests can disrupt carpenter bees and encourage them to relocate

• Provide Alternative Homes: Placing scrap blocks of wood with pre-drilled holes away from your home can lure carpenter bees to nest there instead, helping protect your structures while supporting pollinators

Additional Tips

• Regular Inspection and Maintenance: Check wooden structures regularly for signs of carpenter bee activity, such as round holes or sawdust piles, and take action early.
• Avoid Toxic Chemicals: Non-toxic methods are preferred to protect pollinators and the environment. Use insecticides only as a last resort and preferably with professional help

By combining these strategies-painting or sealing wood, using natural oils, sealing holes, and employing deterrents like fake nests and noise-you can effectively keep carpenter bees away while minimizing harm to these important pollinators.