Push-Pull for Corn in Canada

Hi just wondering if anyone has tried the push-pull method for pest control of stem borers in north america, the typical species used in Kenya (country of original development) is Napier grass and a desmodium sp. I looked up both and it says I can grow both in Canada, though it would appear napier grass might be considered an invasive species, and Canadian tick trefoil (desmodium canadense) is a fairly expensive seed to get, due to its use a showy wild flower.

So does anyone have any experience with this method of pest control or any of these species of plants?

You can use both of the extra plants for Attlee forage, has anyone had problems feeding them to animals, or any other corcerns growing these plants, why is Napier grass considered invasive, can it be controlled?

Any advice would be great thanks,
Cheers

Has no one tried or heard of the push-pull method for growing corn?