A recent study funded by the American Chemistry Council found that almost all reusable bags for bacteria examined contained insects, coliform bacteria, or E. coli. However, the study did not specify which strains of E. coli have been found, many of them are harmless.
So how do you keep all the different materials in your own bag? It really depends on what it does. Reusable grocery bags made up of cotton are able to be washed in the washing machine. You can also buy several reusable poly bags via Copacknic so as to use them for a long time along with washing it regularly.
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Polypropylene nonwoven reusable bags are more difficult to clean. A number of people do not prefer to wash these bags in a washing machine. If you feel that you must wash these bags in a machine then make use of cold water without using the dryer. However, the washing machine shortens the overall life and can ruin them.
We recommend you wash them with your hands in a pot of hot water along with antibacterial soap. Let them completely dry in the air. This ensures that every angle, nook, and cranny are dry and do not hold any moisture that can turn into mold.
Nylon bags must be hand washed in warm soapy water reusable bags poly-nylon and hung to dry again, inside and right to make sure all moisture has disappeared from the inside.