Tips for Protecting Outdoor Furniture and Decks From Carpenter Bees
Your deck and outdoor furniture represent a real investment of time and money, and carpenter bees can quietly undermine both over the course of a single season. Unlike termites, which work hidden inside wood, carpenter bees bore highly visible round holes into exposed wooden surfaces and return to the same spots year after year, each generation expanding the damage left behind by the last.
The good news is that carpenter bees are predictable in their preferences, which makes protecting your outdoor spaces straightforward once you understand what draws them and how to make your property a less appealing target. Whether you are dealing with an active infestation or trying to prevent one before the season gets underway, the following tips can help you protect your deck, furniture and any other wooden structures on your property.
Understand What Carpenter Bees Are Looking For
Carpenter bees are not randomly destructive. Female carpenter bees bore into wood to create nesting galleries where they lay their eggs, and they have very clear preferences about the wood they choose. Soft, untreated, weathered or unpainted wood is far more attractive to them than sealed, painted or hardwood surfaces. This is why decks and outdoor furniture that have not been maintained or refinished in a few years tend to draw the most attention.
Understanding this preference is the foundation of any effective prevention strategy. The more you can do to make your wood less hospitable to nesting, the less likely carpenter bees are to choose your property over a neighbor's unprotected structures.
Keep Wood Sealed, Painted or Stained
The single most effective passive prevention measure for carpenter bees is keeping exposed wood surfaces properly sealed. Paint, varnish, stain and sealant all create a surface that carpenter bees find significantly less appealing than bare or weathered wood. Pay particular attention to the end grain of boards, which is especially soft and is one of the first places bees will attempt to bore.
For deck boards, railings, pergolas and outdoor furniture, a fresh coat of exterior paint or a quality stain and sealant applied every couple of years goes a long way toward making those surfaces unattractive as nesting sites. This is maintenance most homeowners would want to do anyway to protect their wood from moisture and UV damage, and the carpenter bee deterrence is a significant added benefit.
Address Existing Holes Immediately
If you already have carpenter bee holes in your deck, furniture legs, fence posts or other wooden structures, sealing those holes as quickly as possible is critical. Open holes do not just represent past damage. They are active invitations for the same bees to return and for new females to move in and expand the existing galleries deeper into the wood.
Carpenter Bee Dams from Bees N Things are hardwood plugs specifically designed to fill and seal existing carpenter bee holes completely. They press into the hole, restore structural integrity to the damaged wood and can be painted or stained to blend seamlessly with the surrounding surface. At $13.99 for a pack of 15, they are one of the most cost-effective repairs available for carpenter bee damage and an essential step in stopping the cycle of re-infestation.
Leaving holes open while using other prevention methods is like bailing out a boat without plugging the leak. The dams handle the problem at the entry point itself.
Place Traps Where Bees Are Active
Sealing surfaces and filling existing holes addresses the conditions that attract carpenter bees, but traps actively intercept bees that are already targeting your property. A well-placed carpenter bee trap mounted near your deck, pergola or outdoor furniture gives foraging females an alternative target that catches them before they can bore a new hole.
The Bees N Things STND Carpenter Bee Trap works without bait or chemicals and requires no ongoing maintenance beyond emptying it once per season. Its 5 to 15 foot effective range makes it ideal for placement directly on or adjacent to the structures you are trying to protect. It also features a catch and release door for property owners who prefer to relocate bees rather than discard them, which is a useful option for those who want to manage damage without unnecessarily harming pollinators.
For decks or properties where carpenter bee activity spans multiple areas, positioning traps at each active location provides more comprehensive coverage than a single trap at one end of the space.
Choose Materials Wisely for New Projects
If you are planning a new deck build, replacing outdoor furniture or adding a pergola or fence, material selection is one of the most powerful prevention tools available. Carpenter bees strongly prefer softwoods like pine, cedar and redwood over hardwoods. Composite decking, pressure-treated lumber and naturally dense hardwoods are significantly less attractive to nesting females.
This does not mean you need to avoid cedar or pine entirely, but if carpenter bees have been a recurring problem on your property, it is worth factoring material choice into your planning and committing to a sealing and staining routine from the day new wood is installed rather than waiting for weathering to set in.
Inspect Early in the Season
Carpenter bee season typically ramps up in early spring when females emerge and begin searching for nesting sites. The earlier you catch activity, the easier it is to intervene before holes are bored and eggs are laid. Make a habit of walking your deck and inspecting wooden structures in early spring, looking for perfectly round holes roughly half an inch in diameter, piles of sawdust below wooden surfaces and hovering male carpenter bees, which are territorial but cannot sting.
Early detection gives you the opportunity to deploy traps and seal vulnerable surfaces before damage occurs rather than responding after the fact.
Treat the Problem as a System
The most common mistake homeowners make with carpenter bee control is addressing only one part of the problem. Traps alone will not stop bees from returning to open holes. Sealing surfaces alone will not catch the bees that are already hovering around your property. Filling holes without trapping active bees leaves the population in place to find new entry points nearby.
A complete approach combines surface sealing and maintenance, hole remediation with Carpenter Bee Dams and active trapping with a carpenter bee removal kit or individually selected products from Bees N Things. When all three elements are in place, you are addressing the problem at every level rather than managing symptoms one at a time.
All Bees N Things products are available through the online shop with nationwide shipping. For help choosing the right combination of products for your specific deck or outdoor furniture situation, contact Bees N Things at 1-334-868-4687, text preferred.
Frequently Asked Questions (FAQs)
When is the best time of year to start protecting against carpenter bees?
Early spring is the most important window for carpenter bee prevention. Females emerge in spring to search for nesting sites, so having traps in place and surfaces sealed before that activity begins gives you the best chance of intercepting bees before any new holes are bored. That said, it is never too late in the season to put protection in place. If bees are already active, deploying traps and sealing existing holes will still reduce ongoing and future damage significantly.
Does painting or staining my deck really deter carpenter bees?
Yes. Carpenter bees strongly prefer bare, weathered or untreated wood over sealed surfaces. A properly applied coat of exterior paint, stain or sealant makes your deck significantly less attractive as a nesting site. The end grain of boards is especially important to seal since it is softer and more vulnerable. Keeping your deck and outdoor furniture properly finished is one of the most effective and lowest-effort prevention strategies available.
How deep do carpenter bee holes typically go, and do Bee Dams fill the entire tunnel?
Carpenter bee entry holes are typically around half an inch in diameter and lead to a gallery that can extend several inches into the wood, sometimes turning at a right angle to run along the grain. Carpenter Bee Dams are designed to plug the entry hole itself, which is the critical step in preventing re-entry. Sealing the opening is what stops bees from returning to and expanding the existing gallery, even if the dam does not reach the full depth of the tunnel.
Can carpenter bees cause serious structural damage to a deck?
Yes, over time. A single season of carpenter bee activity might produce a handful of holes that look relatively minor. The real damage accumulates as bees return to the same structure year after year, and as woodpeckers, which are attracted to the larvae inside carpenter bee galleries, peck into the wood looking for a meal. Multi-year infestations in deck joists, pergola posts or fence rails can cause meaningful structural weakening. Addressing the problem early and consistently is far less expensive than repairing or replacing structurally compromised wood.
Do I need to remove the bees from the holes before sealing them with Bee Dams?
It is best to treat holes in the evening when bees are less active and less likely to be inside the gallery. If a bee is sealed inside a hole, it will typically bore its way back out through the dam or through adjacent wood, which defeats the purpose of sealing. Treating in the evening, after bees have returned to the gallery for the night, increases the effectiveness of the dam placement and reduces the likelihood of bees boring out through a different entry point nearby.
