It's the end of the summer and I've been wearing sandals non-stop for several months. This means lots of foot gunk has accumulated by the time September rolls around and it is currently caked in my sandals. How gross! Foot gunk happens when my sweaty feet come into contact with dirty in the air, which in turn gets stuck in the crevices and grooves of my footwear. Does that excite you? I bet it does. You're a shoe licking freak and you would give anything for a taste of that. Don't forget the bottoms too! You're going to have your work cut out for you and you wouldn't have it any other way.