I saw this article about these oils,with their effects on Spotted Wing Drosophila.Right now they are fairly expensive,but hopefully the price will go down,if it becomes more popular.
Here are a couple of places that sell it.
https://www.natureinbottle.com/product/kanuka_essential_oil
ive read numerous articles on using tobacco as a insecticide/ fungicide. i bought some seeds online and grew 3 plants, harvested the leaves. theyre hanging on sticks in the garage. probably got 20lbs in there. those plants grow like weeds getting 6ft tall with 3ft leaves. going to make a tea to spray on my plants. ill post the results on here.