Semmering said:As I parted from home I surrounded that particular lily with twigs of last year´s thyme. They are dead but still very aromatic. A bit naive perhaps, but I thought the perfume would keep animals away 
There is a common recommendation to plant smelly plants (green onions, garlic, mint, etc) around things you want to protect as the strong smell makes it hard for animals to smell the presence of predators so they would avoid the area. Other less natural options include spraying a mix that has rotten eggs in it or hanging bars of soap that have a strong smell in the area. I have not had luck with any of these recommendations. Some have had success using a product call milorganite but I have not tried it.
