As soon as she’s fully vaxxed and spayed, in a few weeks, she’s going to be an outside cat and they can fight each other for the best pissing spots in the garden.
The only thing I ever found that seems to work is biological washing liquid. But if there is a fair amount deposited over time then you may as well just torch the house.
Being told cats are smelly by non cat owners… As useful to the tread as being told you’re a shit parent in a kids thread by a person that doesnt have kids.. with carpets repugnantly stained in cat urine.