Hey,

I had a Leo escape from his tank. I tried everything to get him. Tried luring him with food, staying up late at night because he was nocturnal, putting up a basking light in the middle of the house, exc. My dog was actually the one that found him, he started whimpering so I took out a flash light and I finally found the gecko hiding inside the couch.

So don't lose hope he's bound to show up somewhere.