This means that olives should not be left in the field or in the producer's warehouse for more than two days in sacks and more than three to four days in a storage crate. In bags, the olives "light up", they deteriorate and rot. As a result, from rotten olives we have very poor quality (with acids) oil.
For this reason, producers should immediately, after harvesting the olives, have planned with the olive mill to oil their olives as soon as possible.