There are a few natural remedies to get rid of them. You have to try and find which one works best for you.
You can try keeping peacock feathers in the home. Lizards do not like them and will leave the place. Also, try using egg shells. Lizards do not like their smell. Keep egg shells at the corners of the room.
You can also try spraying oil preferably kerosene oil on the lizard. It will make the surface of the wall sticky and the lizard will fall on the ground. Then, you can get rid of it.
Homemade pepper spray can be prepared and sprayed in a similar way. It will irritate the lizard.
Also, a mixture of tobacco powder and coffee is used by some to kill the lizard. Make it into small balls and keep at the place where lizard hides.