| How many times in a day do you use | Frequency | Percent (%) |
| Once | 32 | 26.7 |
| Twice | 34 | 28.3 |
| Thrice | 4 | 3.3 |
| Others | 1 | 0.8 |
| n/a | 49 | 40.8 |
| Total | 120 | 100 |