i have never had a leopard gecko escape, so i can't speak from personal experience. the advice given in response to your other post (below) was really good. in addition, i would set up a red-bulbed light that emitted heat in every suspect room. (the light will emit heat, and the red will bother a leo much less than a white-light bulb). leave it close to the ground, and leave it on 24 hours. beneath the light, set up a bowl with mealworms in it, and it must be deep enough to be sure that the mealworms can't escape. it would be a good idea to put a shallow tray of flour/cornstarch/calium powder under this bowl, under the light. count the mealworms each night. the next day, check for footprints in the powder, and see if any mealworms are missing. if the lamp is too expensive, get a heating pad (doesn't have to be big) for each room, and slide it under the tray of powder. the heating pad/light bulb must stay on 24hours, in order to accumulate enough heat to attract your leo. also- don't limit your search to just the basement. place a set-up in every room that you can. alternatively, you could leave margarine containers (with top intact, but with a hole on the side) around your house, with a moist sponge inside on the bottom, to check regularly. if you are really worried, (and you live alone,
), you can always let a bunch of crikets loose in your house, though i wouldn't do that yet. if you have cats, ferrets, or dogs, keep them out of the basement, and preferrably have them out of the building. if you can, check a room for the gecko at night, in the dark, and be quiet, or you might scare it away. my number one suggestion is to buy a top for your tank right away, lest this happen again.
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marla
keeper of: axolotls, catfish, ferrets, leopard geckoes, oriental fire-bellied toads, and sugar gliders