i've posted this before but it's still a problem. the freeman tray slides into a groove in the screened bottom board. the groove is also in the front of the bottom board so the tray is sealed from entry on 3 sides. there is a less than 3/32 gap at the rear of the bottom board. the screen is also sealed on 3 sides when properly installed & it is properly installed. how are the bees getting into the tray!?! the bees seem to be attracted to the oil.