After we celebrated @laputis' birthday with grilling sausages, my mom called. Among other things she said how my nephew taught her how to get rid of drosophilas (fruit flies) that have been gathering in her apartment the humaine way. Here's how you do it:
Put a banana peal in a jar and cover it with plastic sheet. Make a tiny hole in this sheet and leave the jar overnight. This way most of the flies will go inside.
My mom then let them out in the meadow the next day.