If you find yourself forgetting to log out of Facebook on public computers and you don't use a utility to log out of Facebook automatically, then you might consider clearing your Facebook search history. Read the tip below.
Have fun and always try to be safe on Facebook.- Go to your Facebook Timeline page.
- Click on the Activity Log.
- On the left panel under photos, likes and comments click more and then click search.
- Your search history will appear. Click on Clear Searches on the top and on Clear Searches on the pop-up to clear your search history.