@Jan186 I had a quick look at your listing and it doesn't appear that you live on the property, just go to attend to the chickens?
I would just make itt clear to guests that they should close windows and lock up if they are going out, that the host is not responsible for the security if guest 's belongings if they fail to do this.
I see your listing is new and I have a couple of suggestions. You state No pets, but you have a photo of a dog on the furniture in your photo gallery! You should remove that photo immediately or you'll have everyone showing up with a dog.
Also, while you state No Pets, you qualify that in your house rules "If I approve a smalll dog it can't go upstairs". No! No Pets means no pets, period. If you give guests an inch they'll take a mile. And they won't respect the upstairs off-limits. The small dog will be sleeping in your beds.
You should really try to pare down that long list of house rules. It's far too long, guests won't read it. Try to condense it.