@Carmen2636. Yes Carmen, it does seem like you are splitting hairs on your definition of what a pet fee covers 😉
Considering you already have charged fees and looking at the pics I'd weigh up unexpected extra charges against guest reaction (which will flow into your reviews and future guests).
Instead, I'd utilise couch throws and have them on at arrival- guests can take them off if they dont like but most will appreciate not having to worry about minor dirt and may not have read the cleaning section of your manual. Swap them out between pet and no pet stays rather than getting cleaners back. I too am not sure what "removing the fans from affected areas" means.
I also find the last pic's comment strange. What if they use the couch for other things? . Make love not war.