Lot of good suggestions.  I use product called Urine Off.  Order it off internet from Dr. Foster & Smith.  Also have a black light that I use for finding new/old potty accidents.   
Even tho I like urine off, think I'll try couple of the above suggestions.  And, might look into the steam cleaner.  Sounds like good idea.  I'm for anything that works.   
Thanks for all the good ideas.     |