Make scouts pay 200% rent to compensate for the litter and trash they leave all over the place.

For example:

Clerk's Office
Here you can rent a room for the evening or however long you intend to
stay. The clerk assures you that the sheets are clean and the towels are as
soft as a noble's behind.
A pile of worn maps sits in the corner, free to adventurers.
A bulletin board with the heading 'Wanted' has been posted on the far wall.
A bundle of arrows sits at your feet, blending into the ground. (27)
A bundle of arrows sits at your feet, blending into the ground. (26) [2]
A bundle of arrows sits at your feet, blending into the ground. (27)
A bundle of arrows sits at your feet, blending into the ground. (26)
A bundle of arrows sits at your feet, blending into the ground. (17)
A bundle of arrows sits at your feet, blending into the ground. (26) [2]
A bundle of arrows sits at your feet, blending into the ground. (27)
A bundle of arrows sits at your feet, blending into the ground. (26) [2]
A bundle of arrows sits at your feet, blending into the ground. (24)
A bundle of arrows sits at your feet, blending into the ground. (15)
A bundle of arrows sits at your feet, blending into the ground. (27) [2]
A bundle of arrows sits at your feet, blending into the ground. (24)
A bundle of arrows sits at your feet, blending into the ground. (26)
A bundle of arrows sits at your feet, blending into the ground. (21)
A bundle of arrows sits at your feet, blending into the ground. (27)
A bundle of arrows sits at your feet, blending into the ground. (4)
A bundle of arrows sits at your feet, blending into the ground. (27)
A bundle of arrows sits at your feet, blending into the ground. (22)
A bundle of arrows sits at your feet, blending into the ground. (27) [2]
A bundle of arrows sits at your feet, blending into the ground. (26) [2]
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