Gerald from Albany, Oregon writes
My tenacity was purchased in October 2013 .
Tenacity will keep for 3-5 years from the date of purchase if stored away from extreme temperatures. If yours was purchased in 2013 it may still be good. You may wish to contact the manufacturer directly to see what they recommend. You can reach Syngenta by calling 800-334-9481.
Answer last updated on: 09/12/2017