In my opinion I like heartworm medicine given by mouth rather then topical because I just don't trust the topical for that. I use heartguard for heartworms at the begaining of month and then middle of the month I give nextguard for fleas and ticks.     
				__________________   Taylor   My babies  Joey,  Penny , Ollie &  Dixie    Callie Mae, you will forever be in my heart!         |