Parking on private property

[Hai Le]

Hello, I am having an issue with a neighboring business that has customers that park in front of my house and blocks my driveway and parking spots. How do I go about assessing this situation? I reached out to PD and owners but have not had any luck with preventing customers parking in front of my house in my lot. I am in NY. Am I forced to just try and block off parking with some sort of cone and tape or what can I do to deter individuals for parking illegally? I have set up a no parking sign but still continue to have this issue