i wonder how its possible if the pill is twice the dose needed why cutting it would not be affective? i hate this...i guess i feel better not giving a whole one for some odd reason.
I dont give heartworm year round either. I am in Michigan and I know the vet says to do it year round but why???? Mosquitos cannot live under 40 degrees and wll Detroit RARELY gets 40 in the winter and sometimes a month around or below zero....