Is there not any government programs that can in fact help moved addicts or the mentally ill off the streets?
We used to have one... where they used to live until the government closed it, kicked the residents out to find what shelter/programs they could, or fend for themselves on the streets. The government wanted to Save Money... and incidentally, threw a lot of people out of work - this place was one of the major employers here.
I don't know that calling the police will do a lot of good if you don't have any evidence of what you suspect. In fact, it might just piss the "homeless" guy off and escalate the situation. My advice would be to gather evidence, including surveillance of your garage (or whereever your garbage is kept), and then take the proof of trespassing to police. At that point, something could actually be done. Otherwise, you're just harassing them as you have no real proof that this guy is the culprit, and there won't be a whole lot the cops can do without any evidence.
My primary advice to you is this: don't piss them off and make things worse.
Calling the police and insisting they open a file is the right thing to do. They won't actually do anything to catch the guy, but at least there will be a record if something bad/violent ever should happen.
At my last apartment, some crazy coot kept looking into my windows (I lived in the basement) and at one point began leaving notes taped to my window, accusing me of stealing his cat (not the one in my avatar; my younger cat). I caught him one day and he repeated his accusation; I told him I'd had Maddy since she was a kitten and had photographs and vet records to prove it. He still didn't believe me (surprise
), and I started worrying about the possibility that he might simply break in and take her. So I called the cops, who promised to send somebody over... and they never did. I'd already told my landlady about all this, and I took the note down to the police station and INSISTED they open a file. They really didn't think it was worth bothering about, but dammit, I no longer felt safe in my own home, either for my cat or for myself.
At least here I've never had that sort of problem with anybody trying to falsely accuse me of theft, but there are other problems... like somebody getting murdered in the next block a little over a year ago.
This is definitely not one of the safer areas of town to live, but it's better than a couple of decades ago when the local Grim Reapers (or Hells Angels, I forget which one it was) had their headquarters a couple of blocks away. Thing is, Red Deer is a crossroads/mid-point between two major cities north-south and a central point for the surrounding towns east-west. We're perfectly situated for shopping, work, and the drug/sex trade... and the criminals take full advantage of that. And any homeless I see, I stay well away from. Sure, there are some who are victims of the economy and government bureaucracy that doesn't give a damn about screwing people out of their lives. But all too many are drug addicts and/or mentally ill, and you never know who's carrying a knife or gun.