Chris from Woodbridge, Va writes
Its been 24 hours since I sprayed it on weeds and they seem unaffected so far. The bottle is at least a year old and has been opened and used last summer. Its been stored in the back of my truck out of sunlight but likely has gotten freezing cold in the winter and quite hot in the summer.
The Killzall Weed and Grass Killer - 41% Glyphosate does not have an expiration date but has a shelf life of 3-5 years as long as it is stored properly in temperatures ranging from 40-80 degrees Fahrenheit.
Answer last updated on: 06/26/2022
