I live in Charleston, SC. We are home to thousands of very old and hollow oak trees that are perfect residence for honeybees. For people with bee issues in non-removable trees, I have had great success with trap outs and have successfully started 4 new hives from those jobs this summer. As per the agreement with the customer, I set the trap and remove the bees. I always tell them to search the internet and find the best way to seal up their tree to keep pests and other infestations in the future. What are your suggestions. I have never actually sealed up a bee tree and would like to get your input so I can pass it along to my customers. Thanks in advance.