Is there an eviction moratorium in your state that's preventing you from taking action? 

Personally, I might do it just to help prevent co-mingle funds. 

You're doing the best thing you can to prevent this from happening by having it in your lease that they need to leave it in the condition they found it, plus sending them a list of common security deposit deductions. 

This might prevent them from getting to assets held in other LLC's.

They can't prevent that from happening. 

On a side note, I would strongly encourage better screening process to prevent this in the future. 

Let them carry the cost of having an attorney on retainer, since the liability falls on them to prevent any lawsuits from occurring in your rental.

I have 4 properties, does putting them in an LLC and having Children as members in the LLC prevent them paying inheritance taxes since properties are a business and children are members in the business.

Generally speaking, the amount of equity doesn't prevent you from turning it into a rental.

Your W-2 job prevents you from owning or financing real estate?