m0useanswered grow question 3 years ago beneficial Nematodes. microscopic worms that eat the larva.
+ Yellow sticky traps.
=
two kill zones in their life cycle for fast eradication.
https://www.amazon.ca/Nema-Globe-Beneficial-Nematodes-S-Feltiae/dp/B01N5TYSFU
OR THIS
https://www.amazon.ca/Grub-Grenade-Stratiolaelaps-predatory-predators/dp/B07L56BWXK/