It's worth a try, right?! Always try the "holistic" approach first....;~)

A few years ago, we had (this is nasty) a massive possum crawl under our house & die. Very thoughtless of him. We had the appropriate person ("Critter Control" or some such thing) come & remove his earthly remains, but the, er---melody lingered on. And on. I think the bottle of stuff they left us to combat it must have been Neutrodol; it took awhile, as I reacll, but it helped.

Good luck!