Better still, stuff the mouth with garlic, coins, or dirt. Rub windows, doors, keyholes, chimneys, and farm animals with garlic. Fill amy holes by the grave of a vampire with water. The vampire won't be able to get out. Build a big fire in the fireplace, and light torches to place outside your home.
Vampires hate bright light.
Find a big black dog and paint an extra pair of eyes on its forehead. A vampire who sees this dog will be scared away. If you don't have any rice or thorns or salt to put around your bed, lay out newspapers. Any vampire who can read will have to stop to read every word before moving on to biting you. Put a knife made of silver under your pillow.