Works wonders on my sons offensively smelly socks and workout clothes. In the past, I've had to soak the socks and clothes in white vinegar to get rid of the smell but this does the trick. I feel like it's getting rid of the smell instead of just masking it. It leaves a mild fresh scent but not an artificial smell. I put it in the fabric softener receptacle of my washing machine and it gets added to the rinse cycle. Highly recommend.