Lizard menace

Lizards are a common sight in many houses. Mine is no exception. 

I have always been trying to prevent these creatures from stepping into my house. Once I spot any lizard, I try to chase it out. I have been using lizard repellants for a long time. But still, it has not worked, as evidenced by a small lizard that stepped out of the voltage stabilizer of my AC a few minutes back.

I am very allergic to cats and lizards. I don't hate these, but I don't like to let them occupy my residence. I don't know whether there are plenty of people like me. 

Living with lizards is frustrating.