In order for your PSA to be effective, you might want to incorporate some carefully chosen sound effects, whether ready-made or created anew.
Sound quality, recording quality, and microphone quality could also be factors that influence the effectiveness of your PSA. Therefore, you should consider getting in touch with Media Services or the Digital Scholarship and Curriculum Center, just as you should consider using the recording studio (featured on the next tab).
As for sound effects, please consider some of these fair use options: