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ANSWER: Technically, this is not really an unlawful detainer situation. This is a landlord-tenant situation, and you have to go under those rules to rid your home of the unwanted guests.
You first need to give them a written notice that they must vacate the property. If they do not vacate, then you can start an eviction case against them.
To start the eviction process, you must file a complaint for eviction with the court clerk. Submit the complaint to the clerk with a copy of the notice that you gave to the tenant. The tenant has five days to answer the complaint.
You have to serve them a summons to appear in court, which you get from the court clerk after you file the complaint and pay the required fee. It does not have to be you personally; the sheriff or a private process server can issue the summons. Once served, the tenant has five days to answer the summons.
If they answer the complaint within the 5 days, then schedule a hearing before a judge to plead your case for the eviction. If the tenant does not respond, file a Motion for Default and obtain a judgment to evict. A Writ of Possession is the form that gives you possession of the property. It must be enforced by the sheriff. You can obtain sole possession (i.e., have the Sheriff remove them) 24 hours after the sheriff posts the writ at the property.
In terms of what access you give them to the amenities inside, no, you do not have to give them access to those things you've mentioned.
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