The most frequently occurring enterobacteria in this survey of 50 cleaning tools from Mexican domestic kitchens was Salmonella and Klebsiella pneumoniae, isolated from 9.8% and 4.9% of sponges respectively. Other species isolated included Aeromonas hydrophila, Pseudomonas spp. and Serratia spp. Food and Environmental Sanitation 2000;20:834-837.