You will need to send them a termination of tenancy notice. This would probably be a 30 day notice. A trespasser action will not work. You can obtain a free eviction notice from my website www.landlordwiz.com The site also has free leases, rental application, rent income/expense tracking features. For more detailed information feel free to contact me at my office in downtown Flint where we handle the legal needs of 100s of landlords across the state. my office number is 810 235-2558 or...