Table 2.
Result from a pilot study including 5 herds that were treated to eradicate lice in December 1993.
| Herd | Size (no. dairy cows) | Herd characteristic | Lice infestations before medication | Medicament | Lice present after medication | ||
| March 1994 | March 1995 | March 1996 | |||||
| A | 25 | Open herd: Purchasing livestock Using common pasture | D. bovis L. vituli | Flumethrin | No lice | No lice | No lice |
| B | 16 | Closed herd | D. bovis | Deltamethrin | No lice | No lice | No lice |
| C | 10 | Open herd: Using common pasture | D. bovis | Deltamethrin | No lice | D. bovis | D. bovis |
| D | 20 | Open herd: Purchasing livestock | L. vituli | Deltamethrin | No lice | No lice | No lice |
| E | 40 | Open herd: Purchasing livestock | D. bovis L. vituli | Flumethrin | No lice | No lice | D. bovis L. vituli |