There are a few natural remedies that have been shown to be effective in treating worms in dogs. These include using apple cider vinegar, pumpkin seeds, and coconut oil. Apple cider vinegar can help to kill the worms, while pumpkin seeds and coconut oil can help to expel them from the body. However, it is important to consult with your veterinarian before using any of these remedies, as they may not be suitable for all dogs.