Hee hee...better hope you don't catch too many...it could get expensive.

This is a popular theory here in Oregon as well. It is especially popular among salmon fishermen. I don't know if anyone can prove it, but a number of people think that fish (regardless of their size) that are caught on a lure leave a scent behind that repels other fish. The easy and cheap solution to this is to wash lures in non-ultra Joy (lemon scent) after each trip. This is probably the only everday soap that fish do not mind. I have no proof that this is true, but it is treated as a fact among salmon fishermen where I am from. It is used by guides and everyday fishermen alike. I myself wash all of my lures in it after each trip. It seems to work not just for salmon, but for anything I fish for. My lures never lose effectiveness after washing.