I have being renovating our rental house after the old tenant (who has lived in the house for 10 years- we just brought the house) had to many cats, and I'm sure you can put 2 and 2 together and figure what happened.
I have replaced all the carpet, painted, new floors etc, and to me the smell of the house is fine- just like a new home. However when someone who hasn't being working in the house visits, they can still smell the cats urine- and they say its quite bad.
Does anyone have any idea on how to get rid of the smell?