Less messy was always my assumption.So, I understand the idea is that sonic showers use sound waves to vibrate the grime off your body. Wondering what it would feel like taking one, and whether you feel 'clean' in the same way you do after taking a regular shower? Also, why were these introduced when showers already are perfectly adequate to the purpose? Are they more resource efficient? Some other reason?
Maybe try using the Sonicare toothbrush.