Received my order from Brushy Mountain Bee Farm today. Below is a photo of the Beetle Blaster Small Hive Beetle traps I ordered.
The Traps are filled about 1/2 way with vegetable oil. The bees chase the beetles into the trap. Once inside the trap, the beetles get coated in the oil and die. These are suppose to be disposable traps, but I have heard from a few other beekeepers that they can be cleaned out by running water through them. The oil just dumps out and the dead beetles get forced out the exposed holes that they originally fell through.