Diazinon shelf life

Discussion in 'Pesticide & Herbicide Application' started by Jason B, Jun 16, 2002.

  1. Jason B

    Jason B LawnSite Member
    Messages: 2

    I am wondering how long an opened bottle of diazinon 25% is "good".
    I bought a huge bottle a few years ago and it says it should be used within 6 months of opening it.

    At a tablespoon or 2 per gallon I could have made hundreds of gallons of the stuff. Certainly more than I could have safely used on my lawn.

    What happens to diazinon as it sits? Does it become less effective as it ages? How long am I able to use it with the desired effect?

    Lastly, what do I do with the nearly full bottle of diazinon when it needs disposed of?

    Thanks a million for any help.
  2. Tony Harrell

    Tony Harrell LawnSite Senior Member
    Messages: 739

    25 percent? WHOA! Who made it? Didn't know you could get technical grade pesticides! I guess if you can't use it up, contact a local pest control operator. If he won't take it off your hands, call your county agriculture agent. He'll know how to handle it.
  3. Jason B

    Jason B LawnSite Member
    Messages: 2

    I believe I have a container of ortho and one called "No-Pest"

    It's available off the shelf at Wal-Mart.

    Good stuff!

    Do they generally charge for the disposal of pesticides?
  4. Tordonista

    Tordonista LawnSite Member
    Messages: 36

    I have a 2 1/2 of 48% (Wilbur Ellis. RU) that I opened at least two years ago. (Save it for tough jobs.) that seems to work just as well now as when I got it.
    Contact your State Ag about disposal. Here in Idaho they have days set up where you can drop anything off at no charge.

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