Reward offered!

I am a first time home buyer and with that said I am very proud of my new home which is in a nice part of town, but when I came home from work I found that someone had spray painted graffiti all over the side of my garage. I called the police and they informed me that since school is out that it's probably some teens in the area acting up. Well, I know that teens will brag if they do something bad so If anyone hears that some teens in the area spray painted someone's home please let me know and if we catch them I will give out a small reward to that person. I have worked so hard to have a nice home and some punk is going to try to ruin it for me is just insane! I have taken pictures and called the insurance company so they will be out soon to look at the damages and let me know what I should do. I was thinking about painting over this but its way to cold out right for the paint to stick. Please parents make sure you teach your children not to destroy someone else's property!