I found this infographic to be a tad bit disturbing. The walkway at our front door (just past the tile entry) is getting so downtrodden from winter traffic that I can't help but wonder if it is a culprit for the grime mentioned therewithin.
We vacuum daily but only have the carpets cleaned professionally once a year (right after winter packs up for the season and leaves). If you have carpeting, how often do you have yours done? Will this change your mind on how you look at/care for your carpet?