I make sure they have enough TP, DIsh pods, Laundry pods, and Trash Bags for the entire stay. 

By all means give them a note on how to use all of the appliances (eg clean out the lint trap on the drier after each load, do not use dish soap in a dishwasher, change the furnace filter regularly, etc).

The best defense against rats entering your property is to seal off all entry points (holes, cracks in walls), remove food sources (dirty dishes, food left in trash cans), and water sources (like leaks). 

To comply they’re using plastic utensils and paper dishes.

Dishes are the biggest conflict in almost all roommate situations.

You should see some of the houses I've rehabbed or walked. ya thats maybe a 5 on a scale of 6.. the really bad ones you need a resperator to go into them.. and people worry about a little dab of mold these folks live in a petri dish.

Wash dishes at the local restaurants.  

You probably don't need to change your interior design or furniture, and you already have the pots/pans/dishes and amenities needed to drop in a student or a traveling tradesman.

When I was 19 I was washing dishes out of high school in Columbus and then decided to buy a single-family rental.

Heck, I hand wash my dishes mostly at home anyway.I am targeting a February move-in.