As you are aware, the long standing tenant can get a lawyer and assistance from the housing rights advocacy agency.Which could cost you court fees, relocation and additional FREE rental occupancy for the tenant ( judges do this a lot). 

I am a member of Masslandlords and find the meetings informative and their forms and advocacy invaluable.

I would contact a tenant advocacy group in your city.

I am Derek Logue, Founder of the site OnceFallen, an advocacy and support site to assist those forced to register, as well as a nationally recognized expert on this topic, and I'm quite frankly shocked and appalled at the disgusting comments on this thread.

So many cities with new ordinances are saying that if the tenant will not allow the interior inspection to evict them.Please if you invest in the KC metro, become a member of one of the many landlord groups and stay informed because the city councils and advocacy groups are trying very hard to change the way things work and have worked for years.

The article Walter provided was written from a tenant advocacy point of view, but even it says the landlord can give notice to non-renew.

I changed the locks at the request of my tenant, her parent, the county victim advocacy counselor who is working with my tenant, and the police.The boyfriend has a bail amount assigned, so he could get out.

I use Free Legal Answers sometimes because all the public advocacy agencies tend to portray statute as heavily slanted toward tenants.

But if they must know, I happen to do a bit of advocacy work here and there for low income people with disabilities, sometimes these people become friends.I'm not concerned with being evicted or anything like that because of the landlords comment but I am curious to know exactly how these people can get away with saying such things simply because I have some friends who stop by, hang out, laugh, joke, leave, stay, use the phone, take a nap, or whatever the ^^^^ they want to do as guests in my home at that moment.I'd really like to know what the litmus test is for guests becoming "drug traffic."

My main interest in this forum as I slowly transition from cubicle dweller to independent investor is to build up my network and contacts and perhaps eventually find the next opportunity.Other than RE I'm a computer nerd for my day job, other interests include building electric vehicles, electric vehicle advocacy, bicycling, outdoorsy stuff, and vintage land rovers.