Do you answer the door every time someone knocks or rings the doorbell or only if you are expecting someone or something? I only answer when I'm expecting someone or something from UPS or Fed-Ex. I don't the door otherwise. It's usually someone trying to sell me something & I'm a sucker. I also am a bit paranoid about some one trying to push past me & rape & murder me! I've watched too many Cold Case/Forensic Files!