I would caution not to try and be the police here as it can get hairy and waste time and energy.

You might also consider talking to the local police on patrol and give them a heads up on your unsecured property.

This is quite the opposite of how the police are portrayed in the popular media in most other democracies.

Ken, I used an administrative fee here that was basically a fine.I structured it by saying that in consideration of the rents such were agreed to under the condition that no additional administartive functions were to be required by the landlord and went on to describe what "additional administrative functions" were.In the event any additional work was required an additional fee for services would be assessed and such would become rents then due.So, if the tenant failed to return the trash cart to the rear of the property and we had to wheel it back, $25.00 was added, if they left trash or other articles in the yard for more than a day, or if neighbors called about noise or if I had to answer any police calls, etc.

Your area might not have this problem but many MH Parks have a lot of police activity in them, even the ones in B neighborhoods. 

Illegal means the police with get involved, you'll go to court as "the state (city, county, or whatever) vs. you".  

If someone overstays, I would assume they could call the police to remove them as a trespasser.

Sharknado could descend upon it on the day of closing and eat your tenants.

That's if Texas is a state where mobile homes are titled, like cars, boats, etc.).Can you get the home removed by reporting an abandoned, titled vehicle on your property (if you do buy it) by contacting the County or State Police?

He plans on calling the police if the dog doesn't stop.