Parvo is a virus that will destroy the lining of the animals stomach. Vinegar will not kill the virus. You need to have your dogs vaccinated, keep areas free of animal excrement and away
from other dogs if its not been vaccinated. There are no natural remedies for controlling Parvovirus
It is a product that does many wonderful things. However, for something as serious as parvo I would veto the idea. All reasearch indicated either using bleach through the entire infected area and/or tossing what you can. Your vet would be of assistance and using professional carpet cleaners is recommended.