UGH!!! I took a tiny step outside the back door to check on something... I didn't even go all the way outside and without even thinking about it (I have outside and inside shoes for this reason) came back in the house and tracked a TON of very fresh pea green and mustard streaks all over the place. We don't usually let the chickens in this area of the yard, but one has been flying over the fence and I guess decided to hang out by the door looking for some hand outs. Well, my wife kindly pointed out my mistake and I spent the last 20 minutes using all kinds of cleaners and disinfectants to do my best to get it all. I'm still feeling sick that I did it and that I didn't even think about it. Don't underestimate the importance of changing your shoes when you go outside!