At 4.8 seconds, the clip is compact enough for quick cues and usually needs no trimming. The hollow impacts can cut through speech, so lower them when dialogue matters. Download the MP3 for offline playback or import it into your phone's ringtone or notification settings. Headphones make the surround-style movement more noticeable; avoid stacking it over similarly sharp effects. For a bigger payoff, follow the final knock with an FBI open up punchline or a FNAF jumpscare scream, but leave a brief pause so listeners register the visitor first.