Homeless people sleeping and using drugs acting zombie like in front of my house l…. Who to call?? : TwinCities

Not a full solution but if you can turn your water spigot off from inside the house (I have an interior valve about a foot it 2 back from the wall, inside the ceiling of my basement) then the people may move on to find a new water source. It's about time to do that anyway if you want to avoid burst pipes this winter.

Ya, I did that. They still wander into my backyard doing gods know what. Leaving needles and lots of trash behind

Can you get a gate and lock it?

Possibly not the best solution but are the needles magnetic, construction sites have a large magnet on wheels you can use if you can't lock a gate.

I suggest you invest in good cameras to protect yourself from legal liability

Have you considered a giant magnet?