Анотация: The results of two examinations on the effect of a sodium perborate bleaching agent (Oksisept) for cleaning and disinfection of waterfowl incubators, applied by coarse spray and cold aerosol spray are presented. The comparative evaluation of the disinfection was done via microbiological examinations of the microbial count reduction, presence of residual microflora, and detection of indicator bacterial species. The efficacy of both disinfection protocols was assessed as high. The elements of the ventilation/cooling system of the incubator were evaluated as critical for disinfection, due to the high microbial contamination rate and the more difficult cleaning and disinfection