Shelf Life Buffalo Pro weed killer
The product will last almost indefinitely, as long as it has been stored correctly in a cool and dry place. After 5 years, product effectiveness may become slightly reduced.
However, if it has been stored in an area that receives sun or is hot like a tin shed, some of the product may have started to breakdown. Whilst the product will not damage the non target plants if used as directed, the overall effectiveness of the product may be lessened.
Answered: 9 Aug, 2021