In order to protect your home from unexpected guests, you need to install this mod. The essence of the mod is that if in a darkened place one of the blocks will be highlighted, then you will already know that one of the hostile mobs can spawn at this place.

Installation instructions for the mod for Minecraft 1.7.10:

1. Install Minecraft Forge

2. Download the archive with the mod

3. Open the downloaded archive and unpack it into the .minecraft/mods folder