GEX Guarantee

You’re only as good as your last job. Get guaranteed results.

Your customers hire you for your know-how, your specialist equipment and your results. Now Corteva Agriscience and Grazon Extra will stand with you.

Grazon Extra Guarantee. Full product replacement:

  • when applied by high volume foliar spray technique
  • when used according to label directions
  • under suitable growing conditions
  • greater than 90 per cent control will be achieved in two years’ time.

Where Grazon Extra does not achieve this level of control, taking into account the circumstances of use, Corteva Agricience will replace the product.

This guarantee is in addition to your rights under law.


Register to be accredited now. It’s free.

It’s free to register. Then when you use Grazon Extra for spraying the woody weeds listed on the label, you can offer a guarantee simply by filling in an online spray record that will take only a few minutes.

Then you’re backed by Corteva Agriscience.

Become an accredited Woody Weed Specialist and whenever you use Grazon Extra we guarantee results.

Register now