Trifectant Is One Of The Strongest Viracide, Batericide And Fungicide Disinfectant Available. It Requires No Special Handling. Once Mixed The Solution Is Effective For Up To 7 Days. Kills Parvo Virus In 10 Minutes Or Less Of Contact. Two Tablets Makes 32 Oz Of Solution. Complies With Osha Standards. Safe Around Birds And Small Animals If Used As Labeled.