When my pup had it he was on medication for 30 days and we fed him chicken, rice, pumpkin, and probiotics for every meal. We picked up his poop immediately without even letting him smell it and I carried a damp paper towel with me and wiped his bum when he was done. Giardia can never be killed it can only be removed from the body by the medication through feces so when the dog poops it is technically still alive. If he were to like his bum or lay on his bed and get it on there and then later put his head in that spot he can contract it again and basically make everything you have done moot. But with that regimen it only took us the 30 days to rid him of it! I think it had less to do with the food and more to do with the diligence of making sure the second contact wasn’t made.
