Dog Kennel.... Works for me
Seriously though, our dogs have been banished from the house as one of them squats for a #2 as soon as he feels the softness of carpet beneath him. On the occasions he did this, I used Extracta's Bio Enzime treatment, left it for 3 hours, extracted and treat the are again with the Bio Enzime treatment and left it... There's no stain and certainly no smell. Our carpet's 80/20!