Fixing the problems of the invasive species in the Galapagos is not easy as it is very expensive and takes a long time to rid an island of an invasive species. There are many organizations that dedicate themselves to help keep invasive species out of the Galapagos and help eradicate them as well like the Charles Darwin Foundation who helped create the Galapagos Inspection and Quarantine System (SICGAL) that checks the luggage brought into the Galapagos Islands for animals and plants that could be released onto the island. Another example of a proposed solution is Project Isabela Project Isabela which was proposed to rid the island of the feral goats before they caused any extreme damage to the island and the animals living on it. This proposition was very gruesome due to the large massacre of goats which left large amounts of dead goats on the ground for everyone to see. They left the slaughtered goats on the ground so that the nutrients from the goats would be put back into the ecosystem. Other invasive species that were successfully eradicated were fire ants, rock pigeons, cats and a species of blackberry bush. Scientists have also suggested the release of natural enemies to control population growth amongst the invasive species.