Dealing with carpenter bees | MOTHER EARTH NEWS
If you spot a large bee in your house that looks like a shiny bumblebee with no fluff, it is likely a carpenter bee.
If you have a wooden house or deck, carpenter bees may want to share your home sooner or later. The females drill holes half an inch wide in the wood and then dig a burrow to raise their young, often reusing nests that are year after year.
Extension entomologists agree that the best way to prevent damage from carpenter bees is to keep wooden surfaces painted (stains don’t put them off nearly as well). Some people are lucky enough to plug up bee entry holes with aluminum window shields that are taped in place. After a couple of weeks, remove the tape and fill the hole with wood putty.