My cousin called the cop to report about this situation, so once the cop arrived and we talked about what was going on... I showed the cop my yard where they threw the trash (food paper wraps, bags, and some drink bottles). The cop thanked us for calling, so the cop had to secure the street for about 2 hours, then he caught some kids coming out on the street again, he already talked to them and made them go home now because it's curfew! Also, told them about dumping things in people's yard is illegal! If getting caught, they will be issued a summon and must appear in the juvenile court... That's good, but still that's bad thing to dump something in the yard or on the street. It happened just like last year and two years ago... they're still out there!
Some of the neighbors are still watching out them and make sure they don't do something trouble... Well, that's sad their parents always at work while the kids come home from school and no one is there to watch them. 
