How long do you keep mouthwash in the mouth | Frequency | Percent (%) |
20 seconds | 17 | 14.2 |
30 seconds | 25 | 20.8 |
40 seconds | 8 | 6.7 |
More than a minute | 21 | 17.5 |
n/a | 49 | 40.8 |
Total | 120 | 100.0 |