Most bed bugs seem to prefer to aggregate.  However, a few bed bugs will be found in unpredictable locations, all alone and seemingly isolated.  That is away from heavily populated harborage sites. Nobody quite understands why that is, yet it is an important piece of information because of its impact on control.  This is why treatment methods aren’t 100% effective.  Consider however doing a post-treatment K9 inspection to ensure the effectiveness of the treatment.
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