I have heard of this. Last I heard (and I am uncertain of the reliability of the source) supposedly tests were conducted at NC State and other places. Seems a volatile oil in the soap might be the reason it works. I must admit that it sounds weird, but if it works then why not?
I used to be a racist, but I don't have much interest in it since Dale Earnhardt got killed.
Outside of a dog, a book is a man's best friend. Inside of a dog, it's too dark to read.
Good judgement comes from experience; experience comes from bad judgement.