Xentari Questions
Results 1 to 10 of 10
  1. #1
    Join Date
    Mar 2015
    Location
    Burke, North Carolina
    Posts
    12

    Default Xentari Questions

    Have been using Xentari for a couple of years now with good results.
    Although I have always stored treated comb in the house.
    This year, I plan to store under a lean to shed. Does freezing temps kill the BT? Just curious how other folks have fared using BT with comb stored outdoors where it freezes in the winter. I guess I should not have to worry about moths in winter but worried about early next spring.

    Read through the old threads and seems like a lot of different amounts are used. What amount do most people use with a gallon of water.

    Last of all, just ordered a new bag online. Does anyone have the meanings for the latest date codes on Xentari.

  2. Remove Advertisements
    BeeSource.com
    Advertisements
     

  3. #2
    Join Date
    Apr 2006
    Location
    Pepperell, MA.
    Posts
    6,088

    Default Re: Xentari Questions

    Not sure about the codes. It does expire after a while. Not long ago Amazon was selling expired BT and a lot of us thought we were protected and learned over the winter that we were not.

    I spray my comb, stack the supers in my very cold barn and I'm good to go. Here's a link regarding the mixture. I took a pic of the instructions. You may find it useful!

    https://www.beesource.com/forums/sho...ating-Wax-Moth
    "My wife always wanted girls. Just not thousands and thousands of them......"

  4. #3
    Join Date
    Mar 2014
    Location
    Red Bud, IL, USA
    Posts
    1,801

    Default Re: Xentari Questions

    Pretty much the same as Ravenseye but sometimes the drawn comb only comes in by a super or two; too few frames for a gal and I don't like BTa solutions sitting around very long. Seems to pick up an unpleasant smell. For small frame quantities I put 1/4 tsp in one of the 28-36 oz sprayers.
    “The single biggest problem with communication is the illusion that it has taken place.” -George Bernard Shaw

  5. #4
    Join Date
    Jan 2011
    Location
    Great Falls Montana
    Posts
    7,792

    Default Re: Xentari Questions

    I have used aiazawa strain bt zentari for years. I freshly mix small quantities to spray frames before long term storage. I spray frames as they come out of the extractor for storage and Deadouts and other brood combs are hopefully sprayed before the commercial guys bring the wax moths north with them in May and June. I leave a bucket of water by my stacks. When I get a wax moth problem, a number of silver moths are drowned in the bucket and I know I need to do a little looking.

    I have no idea how long the spores last but I read that out of shelf life dated powder loses about 2 1/2% effectiveness a year. I think that your sprayed boxes should be good for several years and you should have used them by then or sold them.

  6. #5
    Join Date
    Feb 2016
    Location
    Almond, NY, USA
    Posts
    136

    Default Re: Xentari Questions

    Contact Valent Biosciences (maker of Xentari) directly, to have them decipher their date code. They did it for a friend a few years ago.
    Zone 5A 2,200 ft.

  7. #6
    Join Date
    Mar 2015
    Location
    Burke, North Carolina
    Posts
    12

    Default Re: Xentari Questions

    Well, just got off the phone with Valent. The Lot number for the 1 lb bag I just received is 272-437-PG.
    The Valent person said it was made in December 2016 and has a 2 year shelf life. I thought it was 3 but she said 2.

    Bought mine on Ebay where seller had in all caps saying "YOU WILL RECEIVE BRAND NEW INVENTORY DIRECT FROM VALENT! Packing it up now to be returned to seller.

    Also, currently have emails in to 2 other sellers to see what lot code is before I buy again.
    Will update, if I hear anything.
    If anyone else knows where to buy fresh stock, please let me know.

  8. #7
    Join Date
    Apr 2016
    Location
    Cincinnati, OH
    Posts
    317

    Default

    My first bag of xentari expired and quit working. I’m trying Monterey this season, comes as a liquid concentrate. I can’t remember which strain it is, but I’ve heard it’s good for wax moths. I’ll find out soon enough.
    Mistakes are the best taechers

  9. #8
    Join Date
    May 2012
    Location
    Virginia Beach, Virginia, USA
    Posts
    37

    Default Re: Xentari Questions

    https://www.forestrydistributing.com...-listed-valent

    Bought from here last year, fresh stock.

  10. #9
    Join Date
    Oct 2017
    Location
    Harrisburg, PA
    Posts
    17

    Default Re: Xentari Questions

    I reached out to Valent regarding expiration date, and i got a response stating:

    "XenTari has an incredible shelf-life so you do not need to worry about expiration date. This particular lot was created 2 years ago, but I’ve tested product after 8 years without any loss in potency. The insecticidal component of XenTari is crystalized proteins which, since crystals are the sturdiest structures in nature, gives them their unusually good stability."

    So i guess i will see if my product works this year or not.

  11. #10
    Join Date
    Aug 2014
    Location
    Salisbury, NC, USA
    Posts
    171

    Default

    How long after using BT is it safe to use back in the hive. I'd much rather use BT as opposed to moth crystals on brood comb.

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •