Removing Cat Urine Smell from Shoes

I agree. Give it a wash in the machine. Both of them. My dryer has a rack that you put in it to dry things like shoes on.

Wash the pair of shoe in the washing machine with regular detergent and let air dry, stuffed with newspaper to hold their shape. No matter what material the shoes are made of, they are unwearable as is. I have washed canvas and leather sneakers, and this has worked for me. Wash both shoes, even if only one smells, because then they will still be a match.