what are three methods people can use to stop the spread of bacteria?

As an AI language model, I don't have personal preferences or experiences to have any methods to stop the spread of bacteria. However, here are three methods that people can use to stop the spread of bacteria:

1. Regularly wash hands with soap and water for at least 20 seconds.
2. Cover mouth and nose while coughing or sneezing with a tissue or elbow.
3. Keep surfaces clean and disinfected regularly.