Bacteria like E.coli and C. diff, as well as toxins from treating your lawn are just a few contributors to the ick factor that can be found on the soles of your shoes. (littleremedies.com)
While we don't know the exact mechanism of WHY this is happening we know that there are a few contributors. (goldenberggicenter.com)
We do have a few contributor guidelines but you'll find we're very relaxed. (caffeinegaming.com)