The Flow Frame cells are wider and deeper than normal comb cells which means the queen will not lay worker eggs in them.

Drone cells are larger than worker cells and occasionally, we have found that a queen will lay drone eggs in the Flow Frame. This doesn't stop the Flow Frame from working, but is a slightly messy process and does kill any drone eggs or larvae in the cells when you extract the honey.

We recommend you use a queen excluder to ensure that no larvae end up in your Flow Frames.

If you find eggs or larvae in your honey, it is up to you whether you want to add a queen excluder and wait for the drones to hatch before continuing the harvest, or else just strain the jar of honey.

If you add a queen excluder you need to make sure the queen is in the brood box and doesn’t become stranded in the super.

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