You may find treasure!
And because you will most certainly make a difference by cleaning up an unsightly place in the very least.
We bought a house last year. The last house on a dead end street. Perfect!
However, there is a big gully right next to our house. That is both a plus and a minus.
+ It certainly is unbuildable - a very wet spot a lot of the year. That is good, because it is like having a nice woodsy space for yourself, and yet not have to pay for it.
- It was used in the past as a dumping ground by goodness knows how many people. Certainly the family that used to live in the house we bought used it. They previously had a home that burned down on the lot, and it looks like they tossed a lot over what I have dubbed "garbage hill". There is a big porcelain bathtub, a water heater, a big 50 gallon metal drum, tires, just to name a few of the bigger pieces of garbage. There are also lots of chunks of wood, cement, and more. You get it - "garbage hill".
+ As I've been going over garbage hill and picking up garbage as I see it, (and at this time of year with no leaves on the trees, you see it), I do find some treasures amongst the trash.
On the side of good, someone's trash became my treasure in the mascot lion now guarding our yard, bricks that I used for the little area under my bench & bird feeder, and today I found FOUR suet feeders - all like brand new!
I can remember years ago, when I owned my 2nd house and was preparing to have a new fence put it. Early that morning I headed out to do a cleanup of that area, and found a $10 bill!
So, you never know what you will find, trash or treasure. But, one thing is guaranteed - you will find a much nicer looking area after you do a cleanup!