Tips on how to clear the customs at Quito airport painlessly:
Be sure to declare all goods of value, especially cash if it amounts over $10,ooo USD. If you don´t declare it and they find it you may be subject to a hefty fine.
Be sure to bring in limited amounts of cell phones, TVs and personal computers (maximum 2 per person).
Don´t bring organic materials like plants or animals (without declaring them and taking the necessary precautions beforehand).