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Antimicrobial Activity of Home Disinfectants and Natural Products Against Potential Human Pathogens

William A. Rutala , PhD, MPH, Susan L. Barbee , MS, MSPH, Newman C. Aguiar , BS, Mark D. Sobsey , PhD and David J. Weber , MD, MPH
Infection Control and Hospital Epidemiology
Vol. 21, No. 1 (January 2000), pp. 33-38
DOI: 10.1086/501694
Stable URL: http://www.jstor.org/stable/10.1086/501694
Page Count: 6
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Antimicrobial Activity of Home Disinfectants and Natural Products Against Potential Human Pathogens
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Abstract

OBJECTIVE.  To assess the efficacy of both natural products (vinegar, baking soda) and common commercial disinfectants (Vesphene IIse, TBQ, Clorox, Lysol Disinfectant Spray, Lysol Antibacterial Kitchen Cleaner, Mr. Clean Ultra, ethanol) designed for home or institutional use against potential human pathogens, including selected antibiotic‐resistant bacteria. DESIGN.  A quantitative suspension test was used to assess the efficacy of selected disinfectants following exposure times of 30 seconds and 5 minutes. Activity was assessed against Staphylococcus aureus, Salmonella choleraesuis, Escherichia coli O157:H7, and Pseudomonas aeruginosa. Selected disinfectants were also tested against poliovirus, vancomycin‐susceptible and ‐resistant Enterococcus species, and methicillin‐susceptible and ‐resistant S aureus. RESULTS.  The following compounds demonstrated excellent antimicrobial activity (>5.6‐8.2 log10 reduction) at both exposure times: TBQ, Vesphene, Clorox, ethanol, and Lysol Antibacterial Kitchen Cleaner. Mr. Clean eliminated 4 to >6 logs10 and Lysol Disinfectant ∼4 logs10 of pathogenic microorganisms at both exposure times. Vinegar eliminated <3 logs10 of S aureus and E coli, and baking soda <3 logs10 of all test pathogens. All tested chemical disinfectants completely inactivated both antibioticresistant and ‐susceptible bacteria at both exposure times. Only two disinfectants, Clorox and Lysol, demonstrated excellent activity (>3 log10 reduction) against poliovirus. CONCLUSIONS.  A variety of commercial household disinfectants were highly effective against potential bacterial pathogens. The natural products were less effective than commercial household disinfectants. Only Clorox and Lysol disinfectant were effective against poliovirus.

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