<human>: So, my grandpa has a huge issue. His son married a bad lady, their house burned down so my grandpa took them in to help them, theyve been living there for a couple months constantly fighting. THERE WAS NO WRITTEN RENTAL AGREEMENT. They do not pay rent, they dont clean the house, stuff is now missing and his home is being destroyed. The son and the wife constantly fight, my grandpa has been hit by the wife and she pulled knifes out on them both. The issue is that the son wont tell on the wife my grandpa didnt call the police right away on his son because its his son and he doesnt want to make his life any harder. He told them to leave his house and they came back and said theyre tenants now and they wont leave without being evicted. My grandpa is retired so he doesnt have lots of money to deal with this. 

There is no written rental agreement. Iv'e researched tenant laws and apparently we have to go through the eviction process which is fine but theyre destroying his house when he isnt there. Can we write out a rental agreement now? They arent paying rent.

What are the steps we need to take? We talked to the county and they said that we cant evict them without a rental agreement.

Could you distill the essence of the text into 1-3 sentences?
<bot>: Crazy uncle and toxic wife wont leave grandparents house until theyre evicted, no written rental agreement (or oral technically), what are the steps to get them out permanently?