Yes, only once. It was just Ivermectin in liquid form.
I have also used a PowerPac on her. Again, I've only had her for a year.
I also deworm every six weeks, in the spring I use Moxidectin, summer pyrantel, fall and winter months I use Ivermectin. I also use a tapewormer in december like quest plus or equimax.
What is your suggestion, paintedpastures? And what are you confused about? This schedule has worked for me, and I have done fec counts, blood counts, you name it. I will be doing more when my vet comes out, however. Thanks