With a shock I have discovered that Ontario has banned absolutely every pesticide for the garden, including pyrethrins. I have some fruit trees, so I either have to chop them down, or see if organic methods can help. The organic methods are good for large areas on farms, but usually don't have enough of a wallop to protect a tree if next door is infested.
Thus, I'll spray stinky Neem oil on everything all the time. The neighbours will love me, but they have fruit trees as well! Soon everybody will be spraying Neem oil! Sounds like a party.