heehee.. i've a corgi...
he very noti... but i used the method of ignorin' him and scoldin'
as well when he does his business wrgly...some how if i smack him
he will not listen...also sometimes he does his business wrgly on
purpose to get attention...so you've gotta know wat yr doggy really
wants...attention or really not toilet trained yet... : )
now a days, he understands that if he messes up his area and poop
in the wrg place, he will be ignored and have no one to play with
so he does his poop poop properly liao.. 
even waits for me to come home to bring him dwn stairs to do his
business