I've been wondering for the past few months-- which dose should I give Madoc? He's been on the smaller dose for dogs UP TO 26 pounds. I have a feeling that his weight will always hover around 26 pounds. If your corgi is about 26 to 28 pounds, which dose does your vet recommend and you use? Things on the borderline are troubling! I don't want to use too strong a dose, but naturally I want him protected here in Virginia where mosquitoes can be monsters in the summer. Thanks for any advice!