Zoey's prevention meds have been totally screwed up due to an unexplained flea outbreak this fall...I literally haven't seen a flea in years. I hope those fleas just hopped on because of the plethora of wildlife hanging out in our yard.

Anyway, I gave her the Frontline every 3 weeks for awhile (as per vet's instructions), and so her regular schedule was all messed up.
No fleas lately, so I'm going back to monthly Frontline. I'm thinking heartworm meds and flea meds should be about a week apart. Is this right?