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The main message I get is that they did not find any evidence of pathogenic bacteria on the sponges or brushes taken from a range of domestic settings and therefore there is no evidence that these items are a significant source of contamination in normal domestic settings, if there were some low levels of pathogens left on Cath Rees cloth, they are going to grow quite slowly( they grow optimally at body temperatures), so Cath Rees would not expect to see much growth of these, and this matched their results -- in wet condition there was some limited growth, in drying conditions the numbers either stayed the same or declined.