Killing Canine Parvovirus in Veterinary Clinics One of the biggest concerns of dog owners is Canine Parvovirus, more commonly referred to as Parvo. A number of puppies and dogs die or are treated for Canine Parvovirus each year in Veterinary Clinics in the United States. A simple and inexpensive vaccine could easily protect the dog from this deadly disease, however; many pets go untreated. Once a puppy or dog with Canine Parvovirus has been introduced to veterinary clinics, it can turn into an epidemic. ClO2 (Chlorine Dioxide) is one of the few EPA-registered hard surface disinfection products for Canine Parvovirus. Reducing the Spread of Feline Calicivirus in Kennels and Catteries Feline Calicivirus (FCV) is more common than many cat owners would think. The main problem being FCV vaccination does not always prevent infection, so Feline Calicivirus remains an issue. ClO2 is EPA registered for use against the spread of Feline Calicivirus in kennels and catteries.