I was looking around for potential inspiration and I did find this:
It is a compact street sweeper. A small vehicle that could be deployed in our parks of JWE2. They could be either operated by a human or computer.
They could be deployed from a unique 'cleaning station' that would act like a mini ranger station, where they would deploy these street sweepers in our parks. However, they won't need to be given orders by the players to begin the cleaning process, but the player should set out how long each unit should stay out in the field. The longer they are out on the field, the more buildings they could cover, but the less effective their work is, and they need to go back to the cleaning station to recharge themselves.
They could be upgraded to improve the speed of the cleaning process they apply to the facilities they pass by, or to make sure the facilities they have passed would have a slower rate of accumulating dirt. That way you do not need to deploy so many sweepers at once.
Since they are vehicular, they could operate with a similar function to the ranger vehicles in JWE, however, they are more automated and do not need player orders. They could also be caught in a disaster or dinosaur attack, and would need to go back for repairs or be replaced if destroyed beyond repair.
This could benefit the facilities as the buildings that were cleaned by these street sweepers could be in a more attractive state that would allow players to charge extra for the facilities services. Similar to the rides of planet coaster, the facilities prestige could be influenced by how clean they are.
Most of what I am proposing is just brainstorming, and may not reflect the final implementation if a tidiness management has been looked into for JWE2. But I would like to see such a mechanic make a presence in guest management, so that we could care for the guest needs as much as the dinosaurs.