So when I got home from work I see a bunch of oil has come out of the retaining wall. This wall separates my yard from the back neighbors yard that is higher than mine. There is holes in the wall and deep holes in the dirt on his side where the dirt has washed through. The grass was already semi dead there from a month ago he poured something down his hole. I have never seen this oil before so I looked over the fence and the neighbor had a gallon jug of what I think is cooking oil on the porch table. So I went over and knocked on the door and of course he denied doing anything at all. Then I went back and looked over the fence and the jug was gone, right away he grabbed the jug and brought it inside.
So what to do now?


So what to do now?

