Well, just throwing down corn one day doesn't make them come running. You need to be doing that begining awhile ago. Skip the urine and every other day throw about a coffee can (maybe a little more) on a trail under one of your better stands or climbing trees. You'll develope enough of a pattern to shoot at least one or two by the end of the season.

FYI, if you do it right, you use the corn early enough in the season to fatten and sweeten up the deer meat before it ends up on your table. This is what happens with cattle before they go to the slaughter house. They aren't feed corn their whole life. They are just feed it before they get slaughtered.