Professional burglars are very rare. Most burglars are neighborhood juveniles. Most burglars are never caught. Most stolen property is never recovered. Most home burglaries occur in the daytime.
Most burglars enter through unlocked doors or windows.
It takes less that two minutes for the average burglar to get into your home. If you can delay his entry for just three minutes, most burglars will give up and leave. Just the risk of being seen or heard will deter most burglars. A cooperative program such as Neighborhood Watch is a strong deterrent to crime. Most burglars will not enter an occupied home.