K–Quat 4 is a concentrated, quaternary sanitizer for sanitizing, disinfecting and deodorizing all types of hard surfaces. K–Quat 4 contains a blend of four quaternary ammonium chlorides (four-chain QAC) that provide broad spectrum kill six times greater at 150 ppm than a single chain quat at 200 ppm and two times greater than a dual chain quat at 200 ppm. Especially effective against gram positive and gram negative microbes and fungi. K–Quat 4 is virus and protein tolerant.