behavioral modification is where it is at.
camera, lights, signs, etc...
If you really think it is people having sex and shooting drugs then set up video cameras and put out signs all over the area to let them know.
They will find a better spot if they are inconvenienced.
I personally would have fun with it. You sound bored and old, but want to stay safe on your property. Get a decent drone and learn how to fly. You can then sit safely in your back yard and have a great camera to go record and disturb them till they get the hint. Maybe even get some official looking signs for the area noting "Drone surveillance area"
Would be fun to catch them in the act, then fly away, call the cops and give the cops the video.
Cops cant and wont do anything when they have no evidence. Normally, you call and cops arrive after the fun is over...
