Dirty baskets and carts in supermarkets
American microbiologists conducted a study and found that in terms of the number of bacteria and pathogens of carts/baskets in supermarkets, the toilet rim in the public toilet is not inferior. Among the dangerous microorganisms, E. coli, Klebsiella, Staphylococcus and others were found. How often should there and clean carts/baskets in large stores? Details in our plot.