CNBC found third-party sellers impersonating legitimate businesses and offering potentially harmful counterfeit health and beauty products at discounts.

Periodically inspecting your smoke and carbon monoxide detectors is necessary to confirm their functionality. So how often should you do it?

If your vacuum doesn't work as well as it used to, the filter is the most likely culprit. We explain how often to clean each kind of filter and when to replace them.

This step-by-step guide shows you how to use your iPhone's built-in tool to find and merge all duplicate photos and videos.