Ready to use Spray & Wipe. Kills Parvo virus as well as the TB bacillus and Norwalk virus. Other quaternary disinfectants have failed EPA requirements against M. Tuberculosis because the TB bacillus is covered by a tough protective shell that the typical quat cannot pierce. The superior penetration of RX 75 allows it to quickly break through this shell and to kill the disease-causing bacilli, just as it kills a broad range of other Gram negative and Gram positive bacteria, just as it kills HIV 1 (the AIDS virus) and kills pathogenic fungi. But RX 75 is not just to guard against cross infection. Its ability to penetrate the shell of the TB bacillus is indicative of its ability to penetrate and remove the worst stubborn soil.