I have kinda been out of the loop for a few years with buying medications and such. I need to start Dacota on Heartworm, as it is going to get warm here in a month or so. Does anyone have any suggestions? Is there a trusted company that I can buy through the internet? I don't have a problem buying through the vet, but things are usually more expensive....Also, I know that there was a post recently about using Frontline and some others, but I can't seem to find it now... Anyone have suggestions about what to use? Thanks!