I Truely recommend Pet Bucket.
I have used their Auto Ship for a few years now for all my Nexgard and Heartgaurd . It is hassle Free and always on time.
Try them and for see for yourself., you will be totally satisfied.
I will only give a good review when warranted. They are extremely a great place to deal with.
They also send out an email about a week before to let you know it will be shipping.
Great Job