Under the washer/dryer units is where any snake I ever have get loose turns up. From a texas brown up to a little burm. Never fails.
depending on the size, you could use that bait Idea and fabricate a funnel trap. If it's a small one, you can buy a minnow trap. If it's larger you could try using 3liter bottles (Im sure you can find a link on making them out of the bottles. Pretty simple)
