Only one person suggest an ozone generator. Least likely to damage the components. That would eventually break down the uric acid, urea, and other nittrogenous compounds generating the ammoniacal smell after bacteria and enzyme exposure. UV light (germicidal) might work, but don't expose paper to it (no speaker cones) only the box.
Dog pissed on speaker
Any suggestions for how to remove dog piss from speaker, including on paper cone? Klipsch Heresy IV. It still has faint smell, and if I can still smell it must be strong to the dog. Dog has stopped peeing there but I’m still concerned he might again, driven by the smell. And if I get rid of the speakers, who would buy it?