Help!  Removing cat urine smell from carpet

Help! Removing cat urine smell from carpet

Help! I just moved into a new duplex and signed a one year lease. The elderyly lady that lived here before me was put into a nursing home and her cats lived here alone for 3 months before it was decided that the lady wouldn't be making it back out of the nursing home. The landlord supposedly had the carpets cleaned, but my whole living room and bedroom carpets REEK of cat urine. I've tried carpet deodoriser and a spray on product called Nature's Miracle. No help. I'm reading conflicting information on the net (go figure!) about vinegar and baking soda. Unfortunately these are old stains/odors, so I don't think they'll work. I'm running out of money and I'm embarassed to have people over. The smell makes my boyfriend ill. Is there anyone out there with a solution for my stinky carpet?
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