We use the injections because I don't like having to remember giving pills on the same date of each month. I guess that comes from being old. I never seem to know what date it is and even if I did I would not remember that oh, yeah, the 10th, the dogs need their heartworms pills.

I didn't know the pills gave protection against more types of worms. Dazzi and Jack are due for their heartworm next week so i will check with teh vet about that for sure. And maybe I will switch to the pills anways.