1. Would they come?
2. Would they deal with the issue or just strongly suggest those illegal drug users refrain and then….. wait for it….. write a ticket when the illegal drug users did not stop?
They’d probably charge the homeowner for allowing vagrancy.
I have said this many times, and I will say it again. By the time the police arrive, they will be measuring you for a toe tag. The police cannot protect you in that kind of situation they arrive after it’s all over with.