dog doo shoo shoes

So, I've stepped in dog doo again. Don't tell me to look where I'm going, it's too late now. I usually do, I remember reading once that the worry that occupies the average punter's thoughts the most on a day-to-day basis is the risk of stepping in dog doo. Sometimes you're too busy stopping your child walking into the road, or into another dog doo.

Now, the problem comes with cleaning it off. It gets into all the little nooks and crannies, you can never clean it off properly. What a pain. Raaaaghhhh!

Ok, so why not make the shoe-sole flat, maybe out of teflon? Well, it wouldn't grip. Well, out of teflon with a grip texture? Still lots of nooks and crannies to catch in. Hmmm. So, Imagine a two part shoe sole. The two parts interlock to make, for example, a chequerboard pattern. They are separately movable, so that one set can be recessed and the other extended to create a grippy pattern. Upon stepping in mud, or dog doo, or chewing gum, or anything else sticky, a lever/pump can be actuated to extend the recessed section and recede the extended section until the sole is flat - and can be cleaned easily, by wiping on grass or whatever. Once clean, release the mechanism, grippy clean shoes viola!

I would recommend a mixed ptfe coating for added durability, or on second thoughts it could be made of the stuff roller blade wheels are made of (I should know what it is, but can't remember at the moment). I believe they add grit to pan coatings these days to make the ptfe lasts longer. To ensure that the wear is even and the sole remains flat when recessed for cleaning, the two parts alternate being extended or recessed according to, say, every time the shoes are taken off (you could make it that the lever has to be pressed to remove the shoes for example, working it into the fastening mech). That way, they will be worn very similarly, helping them to maintain the same profile.

A search reveals the link below, an anno is similar to this idea...