| Indications | Staff | Student | ||
| n | Percentage (%) | n | Percentage (%) | |
| Door handles | 36 | 21.18 | 44 | 22.22 |
| Tap head | 44 | 25.88 | 40 | 20.20 |
| WC push button | 40 | 23.53 | 50 | 25.25 |
| WC seat | 50 | 29.41 | 64 | 32.32 |
| Total | 170 | 100 | 198 | 100 |