How to stop carpenter bees


8 Simple Ways to Prevent Carpenter Bees from Moving In

The sun is out; the flowers are blooming; the bees are buzzing — spring is finally here! However, sometimes the buzz of bees is not always a welcome sound, especially when you start to notice nickel-sized holes in your house or patio furniture.

These holes are likely caused by carpenter bees, appropriately named for their habit of drilling holes in wood. Unlike mason and leafcutter bees, which use existing holes to lay their eggs and don't cause damage to the structures they live in, carpenter bees are wood-boring insects that can cause moderate damage. It's important to note that carpenter bees do not eat wood like termites or carpenter ants. However, when they drill holes for their nests, problems like water retention, decay, and rot can occur if left unchecked for multiple years.

If carpenter bees have decided to call your home their home, it can be tempting to use insecticides to kill the bees, but we strongly urge you to try less harmful techniques before reaching for the chemicals. Why? First, carpenter bees are incredibly effective buzz pollinators. Second, insecticide use for carpenter bees can also harm other local pollinators—like mason and leafcutter bees (among others)!

Learn how pesticides can move from yard to yard in our The Importance of a Pesticide-Free Yard article.

Many of our bee raisers have asked us what they can do to prevent carpenter bees from moving into their houses, decks, and lawn furniture without harming other resident pollinators. Which we thought was a great (and timely) question to answer in this month's bee blog post!

But, before we jump into how to safely stop carpenter bees from nesting where you'd rather they didn't, we want to take a minute to make sure you know how to identify carpenter bees from the other buzz pollinators in your yard and garden.

Identifying Carpenter Bees and Signs of an Infestation

Carpenter bees are the largest native bee species in the United States. They are typically all black, or black and yellow, and are frequently seen in spring hovering around the eaves of a house or the underside of a deck—the ones around my house routinely bump into our windows each morning to announce their presence.

Carpenter bees are often mistaken for bumble bees, but an easy way to tell the difference is that carpenter bees have shiny black abdomens, whereas bumble bees have hairy abdomens. Don't be afraid of their large size or seemingly aggressive nature! Males, which have white stripes on their faces, do not have stingers, and while females can sting, they are unlikely to do so unless you're handling them or sticking your fingers inside their nests (which we don't recommend).

Remember, just because you have carpenter bees flying around your yard and house doesn't necessarily mean they're drilling holes in your home. A few things to look (and listen) for:

Bee-Friendly Remedies - How to Deter Carpenter Bees?

Prevention is the primary approach to managing carpenter bees! Typical carpenter bee nesting sites include eaves, rafters, fascia boards, siding, wooden shingles, decks, and patio furniture.

Prevention Techniques