Bayleaf is just another sacred for ancient Greeks and Romans plant. It carries a ton of healing properties, which are as strong as its smell. It helps with stomach, kidney and liver problems, too. It makes the rankings here, because it’s a great fly repellent. The annoying little creatures will disappear at the sight of it. Several strategically placed bowls of bay leaves in your rooms will take care of this business. And by the way, did we mention bay leaves are a wonderful condiment to different soups and stews?