A wet-and-dry vacuum is a kind of floor cleaner that combines mopping and suction for a thorough clean on hard floors. In this article, I'll dig more into exactly what a wet-dry vacuum is, what it can and can't clean up, and who would benefit from having one. If you decide this is the appliance for you, head to TechRadar's roundup of the best wet-dry vacuums for our top-rated picks. What is a wet and dry vacuum used for? Wet-and-dry hard floor cleaners are designed for cleaning up liquid spills