What is the best method for controlling carpenter bees?

The best method for controlling carpenter bees involves applying insecticide to existing gallery entrances. This method effectively targets the bees that are already nesting within the wood, providing an immediate response to the infestation. Carpenter bees create tunnels in wood to lay their eggs, and treating these galleries with insecticide can eliminate adult bees and their larvae, reducing the population and preventing further damage.

While sealing all holes immediately may seem like a preventive step, it could inadvertently trap existing bees inside and lead to more significant issues. Using traps around the home can help capture some bees but may not address the root of the problem effectively. Additionally, removing all wood structures is not a practical approach, as it is usually unnecessary and could result in costly alterations to the property. Therefore, directly treating existing galleries with insecticide proves to be the most effective method for controlling carpenter bees.