Israel’s BioBee (see here previously) develops natural solutions to agricultural pests. Its latest target is the red spider mite, which destroys strawberry plants. BioBee uses drones to drop millions of Phytoseiulus persimilis, a minuscule spider, whose favorite food is… red spider mites.

https://www.timesofisrael.com/israeli-companys-tiny-arachnids-provide-alternative-to-pesticide/