Help me!....please!!!?

Ok i had to watch my neices and nephew last night. [At my house] i usually watch kids at their parents house for the simple fact id rather they tear up their own house and eat their food. Anywho. One of my neices 5years pied on my moms couch!! My mom is out of town right now and i was wondering what are some good products to get the piss smell out. Our couch is made that you cant take the cusions out and its suede. I tried water and clothes detergent it didnt work. We also got these little bottles of odor eliminator but i used them all up.!