I’ve had the same thing happen to me about a year ago. A hatchling, only days old, got loose and I was worried sick about her. I looked everywhere, moved boxes, and picked up anything that a leo could hide under, but still couldn’t find her. She showed up about a week and a half later, not far from where she had escaped. Every time I’ve found an escaped gecko it has been late at night. Usually ill be working at the computer and see some movement out of the corner of my eye.
I’d recommend, if you’re not a night owl, to wake up around 1 or 2 am, and turn on the lights. This seems to be the time they come out of hiding to hunt and explore. Some people recommend leaving a heat pad on the floor in the hopes that the leo will come ‘bask’ on it, but I haven’t had much luck with that. Oh, and make sure you fix your caging problem, so this doesn’t happen again. Anyhow, best of luck, and don’t give up hope!
DaveCable