Just my opinion about alarms but if they are just looking to get in a grab something the alarm isn't going to scare them off. Most people dont pay attention to alarms anymore. I use to have a range rover that got broken into more times then I can remember down by work no matter what alarm I tried. If the area is that bad most people wont pay attention to it, including those breaking in. Don't leave anything of value in sight, I use to leave the glove box open towards then end so they would nothing was in the truck to steal. If they dont see anything they want then they will move along. Most times they break in becasue they see a cell phone, or a radio, or a bag or just about anything that looks like it may have some value.