I don't have scientific proof, but I never felt good about the chemicals in the wet swiffer, plus I'm opposed to putting all those disposable cloths in the trash.

Now I have the Rubbermaid Reveal refillable mop with reusable cloths. You can use your own non-toxic cleaners.

I also have a cordless vacuum for quick cleanups. But with pets, rugs need a real vacuuming also.