If you use a black light you can target the urine areas soak in white vinegar leave for ten min wet vacuum as much up as you can mix up a cup of water with a quarter size dawn dish detergant put in sp ... read more
Call a plumbing professional. That way the toilets can be evaluated. You would not want to flush money down the drain on repairs if you are going to have to end up replacing the toilets in the near ... read more