house gecko has not moved or eaten in 2 days

[sheckie]

hi i'm new here. I posted in the wrong section yesterday so am reposting here today.
I don't own a gecko but there is a house gecko which hangs out in my kitchen. it has been there about a year. for the past 2 days it has been lying by my front door. it has not moved except when I touched it with a piece of paper to see if it was still alive. it then moved a little. I put a few drops of water by it's mouth and it drank the water. I know geckos eat insects but I feel funny feeding it a live cricket. can I release it into the wild so it can hunt for its own food? but if it is sick I would not want to do that. any advice would be greatly appreciated!

 

[sheckie]

I called 2 petstores and one guy said the gecko might be starving (since he had eaten all the roaches in my apartment) so I asked if I could release him into the wild and they said that would give the gecko a better chance. so I took him to the yard downstairs and place him inside the bushes. I saw his heart beating hugely and then the beating stopped. I touched him but he did not move. I was so afraid the stress of the new environment might have killed him. I marked the spot. I went back a few hours later and he was gone. I hope that means he was still alive.