The mean log reductions from baseline measured from underneath the CHG-containing dressings were 0.87 , 0.78 and 1.30 log10 cfu/cm ( 2 ) on days 1 , 4 and 7 , respectively , compared with log reductions of 0.67 , -0.87 and -1.29 log10 cfu/cm ( 2 ) from underneath the control film dressings .