I have all of my dogs on heartworm treatment all year round. As far as flea medicine, I treat them from March-Oct, but not monthly..I use frontline every 3 months. I don't like the idea of treating them topically with something every month, every three months is pushing it.
Misty- Samoyed Mix, Tannor- Golden Retriever CGC
Robyn- GSD CGC, TC, Midnite-GSD CGC,TC, Brennan-Golden Retriever CGC, Batman-Husky/Greyhound , Apollo-GSD