1. What is the best flea prevention product for outside pets -(a)cats and b)dogs...and what makes it/each
2. What is the best heartworm prevention for
(a)inside dogs and (b)outside dogs?
Thank you very much!
If you are looking for flea prevention only then look into Advantage and Program. Sentinal protects against heartworm and fleas ( all in one). I do not have a favorite. vetcare