Is it necessary to wash and then spray an infested persons bedding?
This too was studied by Speake, Thomas and Cahill in 2003. Their research showed that there was a 1 in 1,000 chance of a living louse appearing on a pillow after one nights sleep. Put differently, a person would have to spend every night in the same bed for almost three full years before a louse would appear on a pillow. And it just doesnt make any sense at all to apply sprays to bedding.
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