Jeroen Ruigrok van der Werven on Nostr: For Dutchies, Belgians, and Germans, and possibly others in the EU, you might like ...

For Dutchies, Belgians, and Germans, and possibly others in the EU, you might like https://www.biogroei.nl/ or the English version https://www.biogrowi.com/

They have excellent biological solutions for a lot of common pests.

In my case, trying to combat some varenrouwmuggen ('rouwvliegjes', Sciara analis) with some nematodes (Steinernema feltiae).