Biological pest control
Organic Farming
For example, parasitoids of the olive fruit fly move around the olive grove: you don't have to waste days of work to get them there, as opposed to chemicals ...
Another advantage of biological control is that it is not harmful to humans, nor for their animals, including hunting dogs and honey bees, and also, unlike chemical pesticides such as Dimethoate, you can collect the olives immediately after treatments.
Biological control is based on the natural competition between living beings: as the olive fruit flies eat the olive, something else eats them, to be in turn eaten by something else, perhaps by those birds whose lack hunters complain about ...