I was in the checkout line at Target the other day and spotted a steam mop on the conveyor belt behind my stuff. I asked the woman behind me about it. She was trying it for the first time. At $40, she figured she couldn't lose. Well, anything but $40. But anyway, it piqued my curiosity. Turns out, it's the hot new trend in cleaning supplies.

A recent Washington Post article on the subject offers a pretty nice overview of the method. As for effectiveness and the potential to provide relief for allergy sufferers, steam cleaners seem promising. They are not a "magic wand," but myriad types of steam cleaners can apparently clean things from floors to outdoor grills pretty well. And because hot steam is touted for its ability to kill dust mites, mold and other allergens, they appeal to allergy sufferers.

Another lure is that the method offers a healthier alternative to chemical cleaners and is therefore kinder to the environment, especially waste water. But as with many eco-friendly efforts, there's an "inevitable weighing of pros and cons." Steam cleaners require electricity to use and energy for production and transport and will eventually add to solid waste in landfills.

And I noticed that steam mops such as the one at Target are made by chemical manufacturers who claim the product can be used with or without cleaning solution. If used with cleaner, they lose they're distinction as an innovative and healthier option to conventional products.

Oh well, they almost got a perfect score.