Big D PHENO D+ is an EPA-registered, hospital-grade antimicrobial agent and two-way deodorizer for use on pre-cleaned hard, nonporous surfaces including toilets, urinals, bathtubs, shower stalls, seats, benches, lockers, partitions, counters, fixtures, knobs, handles, railings, telephones, furniture, equipment and other surfaces which could harbor hazardous microorganisms. PHENO D+ kills harmful viruses, bacteria, fungi, mold and mildew, while sanitizing and deodorizing.