This rubber welcome mat runs $US50 from gadget house Meninos. They also sell a black-and-white one featuring the Pitfall! scorpion. Much more creative, and less antisocial, than the good old “GO AWAY” doormat.
Pitfall Crocodile and Scorpion Doormats Encourage Guests NOT to Wipe Their Feet [Craziest Gadgets via Destructoid]