Frontline Plus Shelf Life
According to the manufacturer, Merial, there is no expiration on Frontline Plus as long as it is stored in a room temperature environment (no extremes).
"Never say you don't have enough time...You have exactly the same number
of hours per day that were given to Helen Keller, Pasteur, Michelangelo,
Mother Teresa, Leonardo da Vinci, Thomas Jefferson, and Albert Einstein."
- Unknown
Medical & First Aid 