Your Vet Clinic is the best place to get information on controlling Sheep Measles.
Most rural vets will stock straight Praziquantel tablets such as Droncit or Wormicide, as well as All Wormers. Most urban vets are likely to stock the All Wormers only.
If you only want straight Praziquantel tablets for your dogs, ask your Vet to get some in, or contact your closest rural Vet.
Otherwise contact Ovis Management and they will be able to assist in identifying the best option for you.