[Susan]

Pattyvaughn-
I have always thought heartworm prevention needed to be a 30 day regimen. I give mine Heartguard and very seldom miss a dose. Please enlighten me so I can back off on the dosage. Here in south central Texas fleas and ticks can be a real problem, also. We have few freezes and sandy soil can add to the problem. My vet is very pro heartworm prevention and has always insisted once a month is necessary.
Thanks!