imafan26 wrote: Most organic controls will not work well on hard bodied insects.
That is true for anything that would be working on the outside. So grasshoppers are not vulnerable to diatomaceous earth (not only because they are hard bodied, but because they jump rather than crawl). They are not vulnerable to garlic-pepper sprays, except possibly for repellant qualities.
But Neem oil works when it is ingested as they eat the leaves it was sprayed on. So hard bodied doesn't matter.
I found this:
How Neem Oil Controls Grasshoppers
After you spray plant leaves with neem-based insecticide, grasshoppers eat the neem as they feed on the plant. Neem oil contains the natural insecticide azadirachtin, which reduces insect feeding and prevents immature insects from maturing into adults and laying eggs. Because grasshopper nymphs already look like adult grasshoppers and do not go through a complete metamorphosis, neem is more effective as a feeding deterrent than as a growth regulator on grasshoppers.
https://www.gardenandflowers.com/info_12 ... ntrol.html