Mixed use of broad and narrow spectrum drugs

In order to minimise dependence on the broad spectrum wormers, the use of salicylanilide products at particular times of year can eliminate fluke and Haemonchus burdens and (in the case of closantel) provide a period of protection against reinfection. At other times of year a normal broad spectrum drug should be used to prevent a build up of other worm species such as Oesophagostomum.

In practice, salicylanilides are perhaps best used at the start of the rains with a broad spectrum drug used at other times.

Rafoxanide (Ranide or Ranox) and Closantel (Flukiver) can be difficult to obtain in Kenya but can be more frequently found in combination (rafoxanide with levamisole as Flukazole or Multidose).