Here is a really cute sign that reads " warning this is a bullshit free area "

designed and hand made by me

I can customize to suit your needs

It is high quality vinyl on an aluminum back ground

other signs can also be ordered to read

Beware of Rooster
Beware of geese
Beware of Donkey
Beware of Goat
Beware of wife
Beware of Children
Beware of dog poo
Beware of cat poo
Beware of Doggie bombs etc

use your imagination