This may be one of those “I’d rather not know what’s really in there” moments. But despite the appeal of sandboxes, those communal gathering spots of the 4-year-old set may not be as innocent as they appear.
Like swimming pools – which we enter with a certain amount of forcing ourselves not to think about what’s really in that water – the shared sand space contains the residue of all who have entered it. That includes bacteria, parasites and other infectious germs carried by kids and – depending on the location of the sand – animals. The difference is that the sandboxes don’t have chlorine or other agents to help kill off some of the germs.