Can anyone Help?

Hello,
My 7 year old male cat peed in the floor vent. We cleaned what we could and have tried spraying Natures Miracle down it, but it still smells. Does anyone have any ideas on how to get rid of the odor?
Found the reason he did it was due to a UTI. Poor Kitty.
Thanks for any help!

Here is a previous post addressing your problem:

http://www.thecatsite.com/forums/showthread.php?t=68120

Thank you so much! We scrubbed it with a bleach & water mix yesterday, and that did seem to help a lot.