Well it is pet urine. I have had several carpet specialists come out and say that they can take the carpet up and put Kills on the floor, put the carpet back down and professionally shampoo it while it still looks new afterwards.
Did you do it and pay for it?
Then you have nothing to say about how the landlord repairs or replaces the damaged property.
If you had done it and paid for it, you would have a defense against eviction.
The trouble with tenants is that they come up with these stories about who told them about what could be done, but they don't get it done and pay for it.
If you have to be evicted in court you might have better success arguing depreciation than you would have arguing that some carpet specialist said this, that, or the other thing unless that carpet specialist was in the courtroom testifying to this, that, or the other thing.