Welcome to ATP and to the PNW. For what it's worth, we have no venomous snakes on the west side of the Cascades, so you are likely running into garter snakes. Doesn't help your phobia, but at least you can rest assured they won't harm you. Lovely job you are doing. And, yes, I second the 'free - you remove' idea on Craigslist. My son did that with a whole landscape full of those stackable pavers and they were gone within a day. And I also second the thought that once you've cleaned up your yards, the snakes will move on. Good luck, and keep posting. We love in-progress photos.