In January of 2005 the Department of Agriculture introduced a new ruling that ALL horses entering W.A. must have a follow up drench and sample. This has created some confusion with what CHT organise and charge for, at and prior to crossing the border, and that not charged for and the owner’s responsibility after entering W.A.
Hopefully the reading below will make this a little clearer :-

Prior to and during transport ( CHT WILL TAKE CARE OF THIS FOR YOU )
Your responsibility is to:
• Present your animals at the Western Australian Entry Inspection Point free of liver fluke and prohibited material as prescribed in the entry certificate;
• Have a fully completed "Interstate Entry of Equines into Western Australia" certificate and a copy of a laboratory or veterinary report confirming testing for liver fluke with a negative (clear) test result;
• Have your horse certified as having been treated by a veterinarian with triclabendazole within 48 hours prior to arrival or on arrival in Western Australia,
• Provide three days prior notice of arrival to the stock inspector at the nearest point of entry into Western Australia (Kalgoorlie).

After entry (THIS IS YOUR RESPONSIBILITY)
Your responsibility is to:
 • 21 - 35 days after entry, to have the horse treated by a veterinarian with triclabendazole.
• 90 - 100 days after entry, to have the horse sampled by a veterinarian and the sample tested at an approved laboratory.