Washougal River NA

Our neighbors house leaves much to be desired, there are alot of people who live there, they don't mow their lawn and they keep their garbage piled up in a trailer. The county came out about the garbage and for 2 weeks they covered it with a tarp but now it is out in the open again. 3 months ago the police were out here 2 times once due to them racing go cart up the street and once because a few of our homes were hit with orange paintballs and our lawns and street littered with the leftover metal cartridges and oil based paintballs and to make matters more frustrating they park their vehicles in front of my house everyday. I have asked them nicely to stop and they won't I am at my wits end, My landscaper can't even pull in front of my property to mow! Please Helpthank you in advance for any assistance you may give