Sorry you're having a stressful time. *hugs*

I think "Nature's Miracle" is what we used with our puppy (I know it has to be enzyme-based to really get the smell out), but it's probably easiest to see what Petco has in stock. You might also want to use a carpet deodorizer (Carpet Fresh, et al) in addition. Or Febreeze. Yeah, I have issues with lingering smells, too. ;)