There is no one definitive answer to this question. Some people believe that security bars are very effective at preventing burglaries, while others maintain that they are not very effective at all. The truth is that it depends on the specific situation and on the individual burglar. Some burglars will simply avoid homes with security bars, while others will be more determined to break in and will find a way to do so. It is important to keep in mind that security bars are not foolproof – they can be overcome with enough determination and strength. That being said, security bars can be a very effective deterrent against burglary, especially if they are used in conjunction with other security measures such as alarm systems and CCTV cameras. They can also help to reduce the amount of time that a burglar has to spend breaking into a home, which can increase the chances of being caught.