Ugh....Can anyone with a herding breed tell me what you are giving your dog for heartworm now that Interceptor is not being made anymore?? The only options I've been given are Advantix II for fleas and ticks with no heartworm meds or Revolution or Trifexis for fleas and heartworms and the new tick collar for the ticks. I am not comfortable using the new tick collar, because we handle my dog ALOT and she goes in my daughter's bed. I don't want that stuff rubbing off. At this point, I think I may just skip the heartworm preventative and just have her tested yearly until the start the Interceptor again.