Only an extra virgin olive oil organic and biodynamic Demeter can be considered edible and absolutely free of traces of pesticides and other poisons.
It is not excluded that in the extra virgin olive oils, also IGP and DOP without distinction, can be poisons, normally in trace admitted, but still substantial.
An excellent extra virgin olive oil is defined by flavorings, perfumes, essential to the presence of unsaturated fatty acids, natural antioxidants, chlorophyll and vitamin E, enzymes and vitamins B and C.
It makes no sense to evaluate it in Depending on the unit cost, make more sense instead to calculate the daily cost per capita to realize that just a few cents well spent to ensure the health of the whole family or the real quality of the Restaurants.