Masonry Bees: Removing Them the Right Way

Masonry bees, those industrious little pollinators, can sometimes become unwelcome guests, particularly if their nesting choices interfere with human activity. While these solitary bees are generally docile and beneficial, knowing how to remove them humanely and effectively is crucial. This guide provides a comprehensive approach to dealing with masonry bee nests, emphasizing conservation and minimizing harm to these vital insects.

Why are Masonry Bees Nesting Here?

Masonry bees choose nesting sites based on several factors. They prefer cavities with a small opening, offering protection from predators and the elements. Common nesting locations include:

• Pre-existing holes: These might be in brickwork, mortar, wooden structures, or even hollow plant stems.
• Suitable materials: They need a readily available source of mud or clay to construct their brood cells.
• Proximity to food: Access to flowering plants is essential for their survival and to sustain their offspring.

Identifying a Masonry Bee Nest

Before attempting removal, it's crucial to correctly identify the species. While masonry bees are common, ensuring you're dealing with them and not another insect is important to select the appropriate removal method. Key characteristics include:

• Size: Generally smaller than honeybees.
• Appearance: Often dark-colored (black or dark brown), with relatively little hair.
• Behavior: They are solitary, unlike honeybees, and generally non-aggressive unless directly threatened.
• Nest construction: They create individual cells within crevices, sealed with mud or clay.

If you're unsure, contacting a local pest control professional or entomologist is always advisable.

How to Remove Masonry Bees Humanely

The best approach to masonry bee removal depends on the nesting location and the stage of the bee lifecycle. Always prioritize humane removal methods that minimize harm to the bees.

Relocation: The Preferred Method

Relocating a masonry bee nest is the most humane option, especially if the bees are actively nesting. This involves carefully transferring the nesting material to a more suitable location.

• Timing: Ideally, perform relocation in the late evening or early morning when the bees are less active.
• Protection: Wear protective clothing, including gloves and a veil, to avoid stings.
• Gentle Handling: Use a gentle, firm hand to remove the affected section of masonry or wood containing the nest.
• New Location: Choose a location away from human activity but still close to flowering plants. A suitable alternative nesting site, such as a bee hotel, can be a great solution.
• Post-Relocation: Monitor the new location to ensure the bees have successfully established themselves.

Exclusion: Blocking Access

If relocation isn't feasible, blocking access to the nesting site can be effective. This method is best employed when the bees have completed their nesting cycle (usually late summer or fall).

• Seal the Entry: Use a durable sealant to securely close the entry points, preventing future nesting.
• Timing: Wait until the bees have finished their life cycle. Sealing active nests may trap and kill bees.
• Suitable Sealants: Use sealants that are bee-safe and environmentally friendly.

What Happens if I Disturb a Masonry Bee Nest?

Disturbing an active masonry bee nest can lead to defensive behavior. While they are generally docile, they will sting if they feel threatened. Symptoms of a sting are similar to a honeybee sting and usually only cause mild discomfort. However, some individuals may have allergic reactions, requiring immediate medical attention.

Dealing with a Sting

• Remove the Stinger: If a stinger is present, gently scrape it off with a credit card or your fingernail.
• Clean the Area: Wash the area with soap and water.
• Ice Pack: Apply a cold compress to reduce swelling and pain.
• Pain Relief: Over-the-counter pain relievers can help manage discomfort.
• Seek Medical Attention: If you experience severe symptoms such as difficulty breathing, swelling of the face or throat, dizziness, or nausea, seek immediate medical attention.

Should I Call a Pest Control Professional?

If you're uncomfortable handling the situation yourself or if the nest is extensive or in a difficult-to-reach location, calling a pest control professional is advisable. Ensure the professional understands your desire to remove the bees humanely.

Masonry Bees: Beneficial Pollinators

Remember, masonry bees are essential pollinators, playing a crucial role in maintaining healthy ecosystems. By employing humane and environmentally responsible removal methods, we can coexist with these beneficial insects while protecting our homes and property. Prioritizing relocation whenever possible is the most effective way to balance human needs with the preservation of these vital pollinators.