Switched my dog to Comfortis
2010-06-20
Date: Thu, 17 Jun 2010 09:16:06 -0500 From: John Dixon Subject: RE: Flea problems…Did you know? Regarding the impotence of Frontline and other spot treatments – my vet has told me they’ve long since started seeing ‘breaks’ in the spot treatments (parasites are becoming tolerant of the chemical) and switchedContinue Reading