Dosage for deworming, or dosage for giardia? You can use the dosage on the bottle for giardia, according to my vet. It says 3 days, but I do 5 and he agrees 5 is better for giardia (or suspected giardia).
It's astronomically priced to do multiple dogs, vonHoss, which is likely why Nan asked about the goat stuff;-)
I have only ever used the goat stuff, and so far so good. Never found any parasites in any of my pups after going to their new homes.