Here's what actually happens when a guest reads a twelve-item checkout list taped to the back of the door: they're holding luggage, a parent is calling the Uber app for the millionth time, a kid needs shoes, and someone is still charging a phone. They glance at the list. They do the thing right in front of them, maybe the thing they were already going to do anyway, and they leave.
Which three or four items survive isn't up to you. It's up to proximity, habit, and guilt. "Take out the trash" gets done because the bin is right there and trash is a thing people already feel weird leaving behind. "Turn off lights" gets done because it's the last thing anyone does before closing a door. "Lock up" gets done because it's printed in bold and also it's the literal last physical act of leaving.
Meanwhile, "Start the dishwasher," "Strip the beds and leave linens by the door," "Set thermostat to 68," and "Leave the key in the lockbox, not under the mat" sit at positions six through nine on your list, right where attention goes to die.
Why twelve feels responsible and isn't
Every item on that list felt necessary when you wrote it. The dishwasher instruction came after a cleaner found three days of dishes congealing. The thermostat line came after a July bill that made you gasp. The "please don't leave the key under the mat" line came after an actual key went missing from an actual mat. Each one has a story, which is exactly why hosts keep adding them and never take any away. A list built this way isn't a checklist, it's a scar tissue.
But guests don't know the stories. They see twelve flat, equally-weighted lines, with no signal about which one will actually cost you money or time if skipped. To them, "please recycle" and "please don't disconnect the smart lock from the app" read as the same size problem, which is to say, no problem at all, because they're checking out of a vacation rental, not auditing a building.
The three-item test
Before you write another line, ask: if a guest did exactly three things from this list and ignored the rest, which three would save you the most trouble? Write those three first, in their own sentences, nothing else on the page competing with them.
For a one-bedroom apartment with a cleaner who charges by the hour, those three are probably:
"Start the dishwasher before you go (soap is under the sink)." "Strip the bed and leave sheets in the hallway, not the washer." "Leave the key in the lockbox — code is 4471 — don't take it with you."
That's it. That's the list. Not because recycling and lights and thermostat settings don't matter, but because they matter less than you've been treating them, and every extra line dilutes the three that don't.
Where the other nine go, if they go anywhere
Some of the other nine items aren't checkout tasks at all — they're house rules that should have been set during the stay, not sprung at the end. "No shoes on the hardwood" belongs on day one, not as line seven of a departure list nobody reads while standing in shoes.
Others are things you can simply stop asking for. Do you actually need guests to take out the trash, or does your cleaner do a full sweep anyway and the bag sitting there costs them ninety seconds? If your answer is "it's nicer if they do it," that's not a checkout instruction, that's a preference, and preferences are the first casualties of a list guests are skimming at nine in the morning.
A few items might deserve a message instead of a line on a list. "Please leave the key in the lockbox" is worth a text sent an hour before checkout, not because texts get read more carefully, but because a single-purpose message gets undivided attention in a way that line four of twelve never will.
What a four-line list looks like taped to a real door
"Thanks for staying! Three things on your way out:
- Dishwasher on (soap under sink)
- Sheets off the bed, left in hallway
- Key in lockbox, code 4471 — don't take it with you
Everything else, don't worry about it. See you again sometime."
That last line does real work. It tells the guest explicitly that nothing else is expected of them, which means the three things you did ask for don't get lost in a sea of implied obligations. Guests leave a clean dishwasher, stripped sheets, and a key in the box. Your cleaner isn't thrown off by a trash bag you didn't actually need gone. Nobody felt nagged on their way to the airport.
If you're attached to the full list
Keep it if you want, but keep it somewhere a guest finds if they're looking, not somewhere they're forced to read in order to leave. Put the full version in the guidebook's checkout section where someone genuinely curious about recycling pickup days can find it. Keep the door sign down to the three or four things you'd actually follow up about if they didn't happen. A guest who leaves without starting the dishwasher is a minor inconvenience. A guest who leaves without putting the key back costs you a locksmith call and an awkward conversation with the next arrival. Those aren't the same size problem, so stop writing them the same size.