[TxVicki]

Originally Posted by joyce evans

Is sentinel for fleas or heartworms or both? Maybe my advise was not accurate?? I understood that she was using Sentinel for fleas.

Sentinel is a Heartworm medication that also has a Flea Birth Control ingred in it. It makes the fleas sterile, BUT fleas can still get on them, but not reproduce.

Hence why I use Sentinel and two weeks later I give mine comfortis. I in no way shape or form do I ever, ever want to have a flea problem. I went through it one time many years and never again will it ever happen. Mine also do not do well on the applied topicals, hence why they get comfortis.