Sheep farmers advised to carry out drench testing
Drench tests carried out as part of the Sheep Technology Adoption Programme (STAP) between 2013 and 2015 indicated that up to half of the drenches used were ineffective against the gut roundworms that cause the main mid-season problems, .
Therefore, if you use one of the benzimidazole, levamisole, or macrocyclic lactone broad spectrum wormers against gut roundworms, it is important to do a drench test to check that it is working, advised Teagasc experts writing in the current edition of the
