I've had cats all my adult life too.
What I was attempting to point out is that if the pets the OP had were cats and urinated on the carpet (neutered/spayed or not), the odor would remain in the carpet and the padding (and if used more than once often into the floor) and at least the carpet and padding would need to be replaced (although I can the landlord attempting a steam cleaning again first). In some cases the floors need to be resealed or (worse case scenario) sections cut out and replaced.
Gail

