The evaluation of electrolyzed water, sodium dichloroisocyanurate, and peracetic acid with hydrogen peroxide for the disinfection of patient room surfaces

Background: Sporicidal disinfectants are necessary to control Clostridioides difficile and Candida auris. Novel application methods such as electrostatic sprayers may increase disinfection effectiveness. We employed a standardized protocol to assess 3 sporicidal disinfectants: electrolyzed water (EW), sodium dichloroisocya-nurate (NaDCC) and peracetic acid/hydrogen peroxide (PAA/H2O2).Methods: The study was conducted at 2 New York City hospitals (1,082 total beds) over an 18-month period. The 3 chemicals were applied by housekeeping personnel following the hospital protocol; the use of electro-static sprayers was incorporated into EW and NaDCC. In randomly selected rooms, 5 surfaces were sampled for microbial colony counts after cleaning. Data analyses were performed using negative binomial logistic regression.Results: We collected 774 samples. NaDCC-disinfected surfaces had a lower mean colony count (14 colony forming units [CFU]) compared to PAA/H2O2 (18 CFU, P = .36) and EW (37 CFU, P < .001). PAA/H2O2 and EW had more samples with any growth (both P < .05) compared to NaDCC. NaDCC applied with wipes and an electrostatic sprayer had the lowest number of samples with no growth and <2.5 CFU/cm2 (difference not significant).Conclusions: The use of NaDCC for surface disinfection resulted in the lowest bacterial colony counts on patient room high touch surfaces in our study.(c) 2022 Association for Professionals in Infection Control and Epidemiology, Inc. Published by Elsevier Inc. All rights reserved.