Science Has Made A Longer-Lasting Avocado Avocados are delicious, but unfortunately they tend to go bad pretty quickly. Fortunately, science is hard at work on this major problem. A company called Apeel Sciences is spraying the avocados with a special solution that keeps it fresh until you cut into it. These avocados can stay ripe for 7-10 days - twice as long as regular ones. Apeel says the the spray is made from fats that come from the skins of other fruits and vegetables. Do you trust these modified avocados? Are you an avocado fan?Think what this means for Mondo's famous, award-winning guacamole! Long Lasting guacamole!