>Betterbee (1-800-632-3379) has very nice screened bottom boards, which appear to be >superior to the screen inserts offered by other vendors. Aaron-Thank you so much for the reply! I called Betterbee, but they only have the inserts that go on top of the bottom board. I am concerned about debris build-up between the screen & the bottom board. Is there a screened bottom board being made? Is it possible (give enough support to the hive)? Linda