Why Do Carpenter Bees Attack Your Home's Deck? Understanding Their Behavior

Carpenter bees are often seen as a nuisance when they target the wooden structures of homes, especially decks. Here’s why these bees might be buzzing around your outdoor spaces:

1. Wood Preference: Carpenter bees prefer bare, unpainted, or weathered softwoods such as cedar, redwood, cypress, pine, and fir—common materials for decks. They drill into wood to create galleries for their nests, which can weaken the structure over time.

2. Nesting Habits: Unlike termites, carpenter bees do not eat wood. Instead, they remove wood bits to create tunnels for laying eggs. Decks provide a large, undisturbed area that's ideal for this purpose, especially if they're less maintained or have exposed areas.

3. Territorial Behavior: Male carpenter bees are territorial and often hover near decks, chasing away intruders and searching for mates. This can make them seem more aggressive, though they lack stingers and are harmless.
   

Prevention Tips: To protect your deck, consider applying a coat of paint or polyurethane, as these bees prefer untreated wood. Regular inspections and repairs to fill holes or replace damaged wood can also deter nesting. If you’re dealing with a serious infestation, consulting a pest control professional might be necessary to ensure your deck’s longevity and safety.