Leading Sheep have been informed that some sheep drench retailers have been recommending drenching sheep every 6 weeks. This is labour intensive, wasteful, expensive, guaranteed to select for increased levels of drench resistance in the worm population resident on your property and if drenches are used for which the worm population is currently resistant, your drench choice may not be effective.
Sheep producers should be only drenching when required (using Worm Egg Counting or other measures) and using effective drenches that monitoring or Drench Resistance testing have proven to still be effective.
If your drench retailer advises to drench every 6 weeks, seek another retailer for correct information. Definitely a case of bad drenching advice being expensive.
If you want more information please visit the WormBoss website.