How To Get Rid Of Masonry Bees (step-by-step Guide)

Hey there, fellow garden enthusiasts! So, you've noticed some buzzy little fellas making themselves at home in your brickwork, your mortar, or maybe even some nice, soft soil? Yep, we're talking about masonry bees. Now, these little dudes are generally pretty chill. They're solitary bees, meaning they don't live in big, bossy colonies like honeybees or bumblebees. And bonus points: they're actually fantastic pollinators, doing a serious happy dance for your flowers and veggies. So, before we dive into making them pack their tiny bags, let's give them a little nod of appreciation for their hard work.
But hey, I get it. Sometimes, their chosen nesting spots can be a tad inconvenient. Maybe they're drilling holes where you really don't want holes, or you've got a phobia that makes even the friendliest bee a bit of a stress bomb. Whatever the reason, you're here for the lowdown on how to politely (or perhaps, not-so-politely, depending on your mood) encourage them to relocate. Don't worry, we're not going all "bee-gone!" with a hosepipe. We're talking gentle persuasion, a bit of DIY spirit, and maybe a sprinkle of fairy dust (okay, maybe not fairy dust, but you get the idea).
So, grab your cuppa, settle in, and let's figure out how to coexist with our mason bee neighbors, or at least steer them towards greener, hole-free pastures. We'll go through this step-by-step, and trust me, it's easier than you think. Think of it as a friendly eviction notice, served with a side of understanding.
Understanding Your Mason Bee Houseguests
First things first, let's get to know our fuzzy tenants. Mason bees, also known as solitary bees or mortar bees, are super important for pollination. They're not aggressive and rarely sting unless they feel seriously threatened. Seriously, it takes a lot to rile them up. They’re the quiet achievers of the bee world, doing their solitary thing.
These bees are often a bit smaller than bumblebees and can come in various colors, from black to metallic blue or green. They get their name from their habit of using mud or "masonry" to build their nests. They're not building little bee mansions, though. They're typically excavating pre-existing holes in wood, old mortar, or even hollow plant stems.
They lead a pretty simple life: find a good nesting spot, collect pollen and nectar, lay their eggs, seal them up with mud, and then… well, they move on. The next generation will emerge when the time is right. This solitary lifestyle is key to why they aren't a swarming problem. No queen bee to defend, no giant hive to protect. Just individual bees doing their own thing.
So, knowing this, our goal isn't to eradicate them (nature would frown on that!), but to redirect their nesting preferences. We want them to build their homes away from your prize-winning patio furniture or that crack in the wall you've been meaning to fix for ages.
Step 1: Assess the Situation – Where Are They Setting Up Shop?
Before you start any DIY bee-relocation project, you gotta know where the problem spots are. Are they drilling into the mortar between your bricks? Are they eyeing up that weathered wooden fence post? Maybe they've found a sweet little nook in some old, crumbling stucco? Pinpointing their favorite spots is crucial. This is like scouting for treasure, but instead of gold, you're looking for tiny bee-sized tunnels.
Take a stroll around your property, especially during the day when the bees are most active. You'll see them zipping in and out of holes. Keep an eye out for:
- Cracks in mortar and bricks: This is prime real estate for some mason bees. They love the little nooks and crannies.
- Soft or decaying wood: Old fence posts, wooden siding, even untreated deck railings can be tempting.
- Hollow stems of plants: If you have large, hollow stems in your garden, they might be using those.
- Muddy areas: They need mud for nest construction, so sometimes their nesting sites are near a good mud source.
Once you've identified the key locations, take some mental notes (or actual notes, if you're feeling organized!). This intel will help you decide on the best strategy. Think of yourself as a bee detective, solving the mystery of the buzzing residents.
Step 2: The Gentle Deterrent – Make Their Chosen Spots Less Appealing
Now that you know where they're nesting, we can start making those spots a little less inviting. The trick here is to use methods that are harmless to the bees but enough to make them think, "Hmm, maybe there's a better spot down the road." We're not talking about anything toxic – we're eco-warriors, remember?
Sealing Up Holes
This is your first line of defense. If they're drilling into mortar cracks, grab some exterior-grade caulk or a good quality mortar repair mix. While the bees are out and about during the day, carefully fill in the holes. They’ll come back to find their door securely shut. Oops!
For wooden areas, you can use wood filler or even just some strategically placed wood plugs. If they're nesting in the ends of boards, try to seal those ends.
Important note: Try to do this when you haven't seen a lot of activity for a day or two. If a bee is mid-construction or has eggs inside, you don't want to seal her in! Wait for a period of lower activity, or do it in the cooler parts of the day when they are less likely to be actively using the holes.
Physical Barriers
Sometimes, a simple physical barrier can do the trick. If they're targeting a specific patch of mortar or wood, you could try attaching a piece of fine mesh screen over the area. Make sure the mesh is small enough that they can't get through but still allows for some air circulation. You can secure it with staples or small screws.

Another idea, if they're going for a particular plant, is to loosely tie some garden fabric or netting around the stems. This might just be enough to make them say, "Nah, this is too much effort," and fly off to find a more open buffet of nesting opportunities.
Repellent Smells (The Natural Way!)
Bees, like many creatures, have sensitive noses. Certain natural scents can be a bit off-putting to them. While this is more of a supplementary tactic, it can help. Try things like:
- Peppermint oil: Mix a few drops of peppermint essential oil with water in a spray bottle and lightly mist the affected areas.
- Citrus scents: The smell of lemons or oranges can also be a deterrent. You could place citrus peels near their nesting sites.
- Vinegar: A diluted vinegar spray can also be effective, but be cautious not to overdo it, as it can be harsh on some surfaces.
Remember, these natural repellents need to be reapplied regularly, especially after rain. They're not a permanent solution, but they can help nudge them in the right direction.
Step 3: Offer an Alternative – The Bee Hotel Gambit!
Here’s where we get a little bit strategic and a whole lot generous. Instead of just trying to push them away, why not give them a better place to live? This is where the magic of a bee hotel comes in! Think of it as a five-star resort for solitary bees.
What is a Bee Hotel?
A bee hotel is essentially a structure filled with various nesting tubes and materials that solitary bees, including mason bees, love. They're designed to mimic natural nesting cavities. They can be bought pre-made or, even better, you can DIY them!
DIY Bee Hotel – Easy Peasy!
Making your own bee hotel is a fun weekend project. You'll need:
- A sturdy frame: This could be a simple wooden box, an old birdhouse, or even a repurposed crate.
- Nesting materials: The most common and effective are:
- Hollow reeds or bamboo tubes: Cut them to varying lengths (around 4-6 inches) and make sure the ends are clean. Crucially, the holes should be about 5/16 of an inch in diameter for mason bees.
- Drilled wooden blocks: Use untreated wood (like pine or cedar) and drill holes of varying sizes into them. Again, aim for that 5/16-inch diameter for mason bees. Make sure the holes go most of the way through, but not all the way.
- A roof: To protect the hotel from rain, which is a big deal for our bee friends.
Assemble your materials into the frame. You can fill it up by bundling reeds together or attaching the wooden blocks. Make sure there are no sharp edges and that the tubes are open at one end and closed at the other (or the wood is drilled to mimic this).

Placement is Key!
This is super important! Where you put your bee hotel matters. Ideally, it should be:
- In a sunny spot: Bees love warmth! Aim for a location that gets at least 6-8 hours of direct sunlight per day.
- Sheltered from wind and rain: A bit of an overhang or a spot near a wall can help.
- About 3-6 feet off the ground: This makes it accessible for bees and easy for you to admire.
- Near flowering plants: You want to put it in an area with plenty of food sources nearby.
By offering a safe, attractive, and convenient alternative, you're essentially saying, "Hey, mason bees! Forget that dusty old crack in the wall. We've got this amazing luxury suite for you right here!" It's a win-win. They get a cozy home, and you get them away from your precious masonry.
Step 4: Patience, Persistence, and Positive Reinforcement (for the Bees!)
Now comes the part that requires the most virtue: patience. You can't expect the mason bees to pack up their bags and move into their new hotel overnight. It might take some time for them to discover the new digs.
Keep up with your deterrents for a little while. Continue to seal up any new holes they try to make. But also, be sure to regularly check on your bee hotel. Make sure it's still looking appealing and is in good condition.
You might see a few curious bees exploring the hotel before they decide to settle in. This is a good sign! They're checking out the amenities.
If you see them using the hotel, give yourself a little pat on the back! You've successfully lured them to their new accommodations. Now, the really fun part is observing them. You might see them carrying little balls of mud to seal their cells. It's fascinating to watch!

A word of caution: If you are dealing with a very large infestation that is causing structural damage, you might need to consult a pest control professional who specializes in humane removal. However, for most typical situations, these steps should be more than enough.
Remember, the goal is not to eliminate these beneficial insects entirely, but to guide them to a location that works better for both of you. Think of it as a friendly negotiation with nature.
Step 5: Embrace Your New Bee Neighbors (From a Safe Distance!)
Once you've successfully encouraged the mason bees to take up residence in their new, designated hotel, you can officially consider the mission accomplished! Yay you!
Now, the best part: enjoy observing your new, buzzing residents. Sit back with your feet up (maybe with another cuppa!) and watch them go about their important work. You'll be able to see them diligently collecting pollen, creating their mud nests, and continuing their vital pollination duties for your garden. It's like having your own little nature documentary unfolding right in your backyard.
Having a healthy population of solitary bees is a sign of a healthy ecosystem. So, while you wanted them out of your mortar, you can now appreciate them for the amazing pollinators they are. They’re the unsung heroes of the garden, and you’ve just helped them set up their own little community.
This whole process is a fantastic example of how we can coexist with nature, even when their preferences clash with ours. You've solved a minor annoyance, learned a bit about fascinating creatures, and provided a valuable habitat for pollinators. That's a pretty sweet deal, wouldn't you say?
So, next time you see a mason bee zipping by, you can smile, knowing you played a part in their well-being. You're not just a gardener; you're a bee-bnb manager, a habitat hero, and a general all-around awesome person. High five!
