Second, I let the tenant know I know their criminal history and tell them to leave.

Hello Kyle,When screening applications for the properties that I manage, I always look for:- Income of at least 3 times the monthly rent (verified through the employer)- Credit score of 580+- Rental verification with past landlords (no outstanding balances, no late payments, and the property left in acceptable condition)- No history of collections, evictions, or criminal offenses- No overdue debt (except medical debt)I have found this screening standard very helpful when finding tenants who pay on time and treat the property well!

Personally, I follow this standard for every application I receive:- Income of at least 3 times the monthly rent (verified through the employer)- Credit score of 580+- Rental verification with past landlords (no outstanding balances, no late payments, and the property left in acceptable condition)- No history of collections, evictions, or criminal offenses- No overdue debt (except medical debt)This process has helped me place quality tenants over the years.

Although, for it to be a criminal trespass.. something that will actually hold up, he would have to be present with the police there.

For example, I mention that every adult must pay a $30 application fee, pass my credit/criminal background, make a combined income of 3x the rent, and whether or not the property accepts pets.

Every adult should be fully screened to ensure you aren't renting to a violent criminal, drug dealer, etc.

But wouldn't this be criminal not civil?

Think hard about your criminal background criteria.

However, if that effort fails, the local agent is equally liable – criminally and civilly – for any fees, fines, etc. associated with the property." 

How else would you know which one is the criminal?