I have a box of baby unscented wipes by the outside door and wipe them every time they piddle. I say, "Let's wipe your diddle" (my made-up word, of course), and they wait for me to wipe them.

It has definitely helped with the smell.
__________________
Joanne

Eli

Chipper

Eva

Snowboy

Rosie(R.I.P. 1996-July 29, 2013)

Cocoa(R.I.P 1998-April 26, 2012):