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![RonDawson](https://data3.answerbase.com/answerbase/1852/UserFiles/User44682/profileImage44682.jpg?634897245130000000)
Sep 25, 2018 - 03:24 AM
The REL Date is the date of manufacture or the Release Date. Syngenta says that Demon WP will last about 5 years unopened. So that puts you at 2019 as the date of when it might not work as well. I would use it without any hesitation. Hope this helps.
Ron
Ron
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