Well anyway, how to keep them away? I'm thinking rugosas...

https://gardeningattheedge.wordpress.com/2011/07/18/the-killer-rose/ ?

What I would probably do is get one of those motion sensor sprayers like some people do for cats (like this). Also motion sensor lights. Basically make your yard less appealing than your neighbors.

If they are destroying property like the box around the spigot, you should be able to call the police on them. Maybe put up another box and put a video camera on it so you know which one to have arrested.

Back when one had to go to Radio Shack to 'get one of those motion sensor things for the sprayers' I found it fairly effective against kids on their way to school.

My wife has a camera with a motion sensor and a wi-fi that transmits to her laptop.You could monitor your yard cheaply and save video to show the insurance people.

One thing to think about is personally confronting any of these people. People become homeless for any number of reasons, but a lot of the long-term homeless have mental health and substance abuse issues. The suggestions above are good ones, and I have nothing to add to them, except to stay safe.

Hmm, those misters sound like a good idea.

Do you think I can mix some pepper spray in it? I've got some hot pepper deer repellent in the shed.

Personally, I'd start without the pepper spray. See if it works with just water, but on second thought, they would probably start using it as a shower ;-[ . If not, what I do for my dog sometimes is add some vinegar to the spray bottle I use for training purposes. In your situation, that will also help keep the misting system from clogging up.

I'm so sorry for your situation. I used to work in an office building next door to a popular bar downtown, those drunks don't care where they pee or upchuck!!

Are you sure they are all homeless and not some delinquent kids? I have a friend (she's 75!) who lives in a downtown Phoenix area where she has homeless people sleep on the side of her yard at times. She actually wakes them up, gives them a water bottle and tells them to leave. I think it's dangerous but she's told me that most of them are downtrodden and weak due to poor health from living on the street. They leave and have never harmed her.

Geez you guys are hard-hearted. Get a motion sensor light and call it a day.

Anything edible you grow in your front yard should be considered a gift to the poor.

Suppose you arrange for your system to splash a trespasser with something noxious like pepper spray or vinegar and they then turn the tables on you and get the law after you? Same as when burglars are injured while burgling and allowed to sue the property owner.

As is usual with deer problems, this sounds like a situation for effective fencing. If they can't just walk into your yard and up to your house it's not so easy to help themselves to the water, do other things to and with objects and spaces on your place. Finances permitting a 6 ft. solid fence with the cross pieces on your side, trellising extending the effective height above 6 ft. - codes allow this here, anyway - should be quite an improvement. Including increased privacy and exclusion of dogs.

Rugosas don't do particularly well in the Phoenix area. Most require a certain number of chill hours, like lilacs. Sorry to read of the problems with homeless. At businesses I've worked with they remove the handle from the spigot. At the public rose garden, I don't shoo off the homeless but don't encourage, either. The rose garden is a beautiful spot and they do far less damage than people with scissors and blunt dirty shears.

Totally late here, but if you have sprinklers just have them turn on randomly at night.

Any suggestions for a strong pepper spray repellant that I can spray on commercial brick walls and dumpsters that will deter the homeless from leaving 8-10 beer cans daily, plus razors, combs, dirty napkins etc around a dumpster visible from my office?

Bougainvillea and Prickly Pear. That'll fix em. Prickly pear with the long needles and glochids to keep reminding them later of why they want to wash up elsewhere.

Im having trouble with homeless trespassing in my yards. The best combo ive used is locking the water spickets (i use a screw on kind, not a box), leaving dog poo in places they walk, and spraying the side yard where theyre trying to camp with elk urine and skunk oil. Im raising some blackthorn and cacti, but those take time to grow.

I have a friend here in Las Vegas that is recently having a problem with one particular homeless guy who has vomitted on her car, on the wall on the side of the house, defecated on her property, spread his fecies on her car, her house, her door knobs, etc., and was sleeping up by the gate next to her house. We caught him sleeping there last week, kindly woke him up (bat and fire poker in hands) and asked him to leave the property and if he came back we were calling the police, who are useless and have not helped yet. Well, after the holiday weekend he was not seen until this morning, back to spreading fecies all over her house, including on the window where the camera was so no footage was seen. I am out of options. He apparently has some mental issues, as the nicer homeless people in the park across the street say they are afraid of this one, talks to himself, dances to nothing, and just exhibits mental behaviors. She has been in this house for 6 years and never had a problem until recently. He even jumped the fence or the brick wall by the side of the house to get in the back yard and left his change all over the back cement slab patio. I would really like to help, but the bright motion detector spotlights didn't help, he apparently doesn't mind nasty smells and probably would love the water. Anyone have any ideas?

I have one of him sleeping, and my friend has video of him walking away, but nothing of his face I don't think. She let her rental company know and they were going to call the health department because its a health hazard as well. It was the same guy every time. My friend did call the police, and waited 2.5 hours and no one showed up. She also called 311 and the lady on the phone was less than helpful. Asked if he was armed, if he was on the property and if he had covid symptoms. So seriously she has had to just deal with it without law enforcements help. I guess we just have to wait and see. She did get no trespassing signs for the property too so we will put those up too.