Stay home or see a doctor? Blow & Know Alert Tissues are specially designed to indicate bacterial infections vs. viral infections. Developed by a fellow dog show enthusiast and human doctor, Blow & Know can be used by anyone who is experiencing respiratory illness symptoms. After using the tissue to blow your nose into, it will indicate within 30 seconds of use (by turning RED) if you should seek antibiotics through medical care or if you should quarantine yourself in the case of a virus (tissue will not change color without the presence of bacteria). Blow & Know also comes in a product called WIPE & KNOW that can also be used for your DOG, CAT, HORSE, GOAT, and more! Not only can Blow & Know  be used on nasal discharge, it can also be used TOPICALLY for skin infections! Package includes 2 tissues that stay usable as long as they are stored correctly in their original packaging, in a dark place, out of direct sunlight. Drug free and safe for all ages.