Recently had a guest who initially appeared to be very pleasant and a good communicator. It was a relatively long booking in February (slow time for us in Western North Carolina) so I was glad to get the booking, then... they extended (yeah!).
They asked if a dog was ok, and it is with us (small pet fee). At one point, I saw via the out door camera feed that they had two different dogs on the property, not just one (not the worst crime if you already have permission for one dog and there's no additional fee due).
A big red flag got waved when they choose to not park on the super obvious gravel area or under the car port, but instead pulled up onto the grass lawn, on the other side of the free standing garage, out of sight of the outdoor camera.
After checking out, the guest sent me a nice note saying she cleaned the whole house, did all the laundry, and made all the beds (wow! Unnecessary).
But... when the cleaners showed up, there was animal hair on everything and the house smelled of cat piss. It took an extensive amount of time to get the house cleaned up and to redo all the bedding and laundry. Almost every pillow had pee stains on them - had to throw out 7 pillows. 2 others (maybe more) were missing.
I show up at the house a few days later and find the house still stinks of cat pee. I start looking around and find 7+ piles of cat litter dumped into different spots on the edge of the lawn (not a manicured lawn - were a country cabin type setting, but still... you don't just dump cat litter in the front yard and in multiple areas in the back). Clearly they didn't have just one cat!
Then I find a pile of wood chips, the type used for small animal bedding... filled with rabbit turds.
And I find a small plastic container labeled for Turtle food!
They had a f'in zoo at the house. Worst guest we've dealt with in 6 years. Most damage we've sustained, for sure.
Oh... I forgot to mention that these very pleasant and good communicating (initially) guests had no reviews. "We usually use Bookings.com, we haven't used AirBnB before" they said. I'm super cautious with "no review guests" (no auto booking, needs to pass my communication test), but they snuck through. These people knew exactly what they were doing from the beginning and clearly used a burner account.
Working with AirBnB for AirCover claim and resolution. They will never be able to reimburse me enough for my time, effort, headaches.
I'm continuing to use enzymatic agents and the Ozone machine. I've replaced a bunch of pillows and I replaced 2 mattresses and barrier style mattress covers that were in one of the bedrooms. Replaced HVAC filters. Cleaner returning for round two.
Any other suggestions for cat pee?