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					Originally Posted by  Schooby     I just switched back to Sentinel and I remember asking the vet a long time ago if it worked if they didn't chew it (I have to hide it or they spit it out). He said it worked even if they didn't chew it.   |  
 
  hmmm, the vet today said the chewable version had to be chewed (or at least broken up into pieces).....the pill version doesn't have to be chewed.  It also says that on Heartguard's info. I wonder if the effectiveness is altered if it is not chewed