Arm & Hammer Spray.
Princess now tinkles ever so often on her bed after her spay-it sucks.
Arm & Hammer Multi-Brand - ARM & HAMMERŪ Carpet and Fabric Odor Eliminator ? Pet Fresh
On carpet I had to steam clean once when she marked ( she was in heat & my parents came over smelling like their dog) steam cleaning actually releases & gets all bacteria out. I'd follow up with the Arm & Hammer.