Evict roommate not on lease

[Kevin Polite]

I have a tenant moving out end of month. She had a roommate who was listed on the lease as residing. She was fully responsible for the lease. The roommate wanted to stay and I required an application. It took two weeks to get back. Credit was good. I sent lease and two weeks of dodging he hasn't returned. I 'm now giessing thats why original tenant didnt list him on leaee. I sent letter today inforning him due to lack of communication and not receiving sec dep he must leave when lease is up. Haven't heard back. Will I need to go through the evication process if he doesnt move out?