Pollen Trap OAC


10 Frame OAC pollen Trap (Ontario Agricultural College)

The OAC pollen is a proven design, and has  been around for many decades. Place on top of your existing, reversed, bottom board. Your bees will then use the trap entrance to access their hive. Turn it on and off by pulling out the screen tray. All pollen falls through to the removable drawer below.

More details in the description


To trap pollen, returning foragers must pass through some type of a barrier that will dislodge the
pollen pellets from their legs. There have been many different designs over the years, but the
OAC Pollen trap, originally introduced by the Ontario Agricultural College in 1962 has proven
very effective (Figure 10). Its most attractive features include:
• Less crowding of bees at the entrance
• Drones can still leave the hive
• Pollen stays dry and can be harvested from the rear of the hive without interrupting bee
activity at the front entrance

To install the trap, the brood chamber must be removed first and the floorboard reversed (front
to rear). The trap is then placed in position so that its entrance is located where the original hive
entrance was. The bees will orient to this new entrance promptly. The floorboard now serves to
hold the pollen collection tray. Pollen can be removed by sliding the tray out at the open end of
the floorboard (at the rear of the hive) without interfering with bee flight.

Pollen Trap Components:

The Pollen Tray The tray is made from a frame of wooden strips 25 mm (1 in.) thick and 483 x 368 mm (14 1/2 in. x 19 in.) in dimensions. A piece of fine cloth or nylon mesh can be stapled to one side of the frame and function as the floor of the pollen tray. Wooden slats below the tray should hold the cloth about 25 mm (1 in.) above the floorboard.

With air circulation both above and below the tray, the pollen will remain dry and only need emptying every two or three days. Bees are prevented from gaining access to the pollen by a 4.2 or 3.6 mm (6 or 7 mesh/in.) galvanized screen placed horizontally above the tray (Figure 11).

pollen trap
pollen trap

The Pollen Barrier

The barrier is made from two screens of 5-mesh galvanized screen, spaced 6 to 8 mm (1/4 in. to 5/16 in.) apart. The easiest is to fasten the screens to both sides of ¼ inch plywood that can be pulled out of the trap from the rear of the colony whenever pollen collections need to be stopped. Cut out an area of 33 x 28 cm (approx. 11 x 13 in.) from the plywood and fasten the screens on both sides. Make sure that there will be enough space to slide the pollen barrier into the pollen trap. At one end of the pollen barrier slide, cut in bee/drone escapes (see Drone Escapes, Figures 10 and 11).

To ease installation and removal, grease the edges of the plywood slide with oil or wax to prevent bees from propolizing it.

B.C. Ministry of Agriculture and Lands