answer:I’m sorry you’re having to endure the trash and rubble. I hope you can find a way to fix the problem. It’s not clear from your details if you rent or own your home. If you rent, call the landlord every time your neighbor throws food onto the back lawn. It’s a health hazard. It’s my best guess the rats love what she’s depositing. As for the mess she leaves down by the water, I suggest you make sure there is a clear demarcation between her side and yours. Don’t let her push anything onto what would be your side of any line. Each time she pushes something onto your side of the beach area, call the landlord. I wish you the best of luck.