Best Signs in the World--2

Here is a very fine sign, near an American military base in Germany: I would imagine that this command applies especially, though not exclusively, to those people who actually HAVE dogs....On the other hand, apparently the troops are allowed to fill their housing areas with cow or turtle excrements, if they so desire. Rules can seem so arbitrary, don't you think?

(Nod to Martin, who fills his housing area with sturm und drang, though in a tasteful and friendly way)