I have an opened 3litre bottle of nature’s way pyrethrum plus canola oil pest spray with a DOM of July 2016! ?
Flowers and Ornamentals • Pests
Thank you for contacting Yates.
The product will last nearly indefinitely, as long as it has been stored correctly in a cool and dry place. After 5 years, product effectiveness may become slightly reduced.
Hope this helps and happy gardening :)
Answered: 31 Aug, 2021