There is no line in the sand rule, if her tooth brush is there she might claim I broke in Blah Blah. 

The closet in the master is our personal cloths etc.. one in kitchen is exta dish tabs, toothbrushes, random stuff. 

Example: Bed, bedding, toothbrushes, clothes etc... see if the utilities are on.

What does the apartment actually look like...did they just walk out one morning with coffee cups on the kitchen table, clothes in the closet, multiple pairs of shoes, medicine cabinet looking normal, perhaps with toothbrushes still in place?

You can remove rust spots with a toothbrush and baking soda (ask me how I know...). 

Disposable old toothbrushes help in getting into the window tracks.2.

By midnight her phone and toothbrush are likely at full power and you can turn off the power to those outlets without interfering with the tenants' use of those devices. 

You can have cars, toothbrushes, underwear, roommates, at multiple places.

If/when the room vacated is filled with another paying tenant, then perhaps I would consider a pro-rated refund.I mean, really--a student got into an argument (non-physical) with a roomie and then their reaction is they took their toothbrush and blankie and went home? 

Stumbled on this service, which appears to be an interesting business model in itself and got me thinking about how this might work for convenience items such as toothbrushes, deodorants, or other items that are not necessarily stocked in the unit, but are often forgotten by guests coming to stay: https://www.thehost.co/Anyone using services like this?