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  1. #1
    Join Date
    May 2013
    Location
    Whitla Ab. Canada
    Posts
    436

    Default Will warfarin harm bees?

    Morning:
    A feral hive I've been watching is built under the floor of an old grainery that established itself after swarming this summer. There is about a 1/2 inch of mouse droppings below the hive. I'm positive that once the cold weather hits and they're in a cluster, mice will wipe out their honey stores. I was thinking of putting warfarin mouse blocks under them to try to stop it or even slow the mice down. Any thoughts on this? Thanks.

  2. #2
    Join Date
    Nov 2011
    Location
    Rader, Greene County, Tennessee, USA
    Posts
    6,200

    Default Re: Will warfarin harm bees?

    From a cooperative effort of several universities:

    Warfarin used as a prepared bait (0.13%) is considered non-toxic to bees when used as prescribed (1, 3).

    More here:
    http://pmep.cce.cornell.edu/profiles...farin-ext.html
    Graham
    USDA Zone 7A Elevation 1400 ft

  3. #3
    Join Date
    May 2013
    Location
    Whitla Ab. Canada
    Posts
    436

    Default Re: Will warfarin harm bees?

    Thanks Rader, I just hope it will work fast enough to stop them before they do too much damage. If there wasn't 5000 lbs of wheat above them I would have attempted a cutout this summer after I found them. But the hive is between the floor joists 3 feet in and it's not possible.

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