They have no car, little to no furniture, a cell phone that is sometimes on and sometimes off.

I think many of us use hyper-consumerism as a means of validating our self-worth.We NEED to upgrade to a new cell phone every year, we NEED to take expensive vacations to show our friends how fun our lives are, we NEED to purchase the more expensive car, we NEED to eat at chic restaurants and document the experience all over our social media.

I have acquired a piece of property that has an existing cell tower on it.

Either begin by paying your cell phone bill or having your parents put you as an approved person on one of their credit cards if they have good credit.

I looked at GPS tracking, but they need batteries changed frequently, and a monthly fee to be paid like a cell phone bill, any ideas would be greatly appreciated.

Also it's a good time to look around to see if the tenants have a bunch of stuff plugged into an extension cord somewhere in the house - new service, old wiring, and multiple devices on an extension cord pulling juice from knob and tube wiring is no bueno.Do not call your insurance company about the repair!

And homeowners are able to reach me anytime they want - they have my cell number.

If she starts acting up, tell her to leave the room and if not, tell her you are going to start recording the audio on your cell phone.Is she on a lease or month to month?  

If you have an iOS device you can open the podcast app and search their entire library or just BP podcast by topic/keyword.

More in the "do the dumbest things" category....We get a frantic 11:30 pm call from an elderly tenant crying incoherently but after several minutes my wife determined it was because water was 'pouring' in the bedroom window.My wife distinctly asked her several times if our maintenance guy was called & if he was there as he was not answering his cell.