We've had expensive plantation blinds used as a chew toy, lawns ruined, doors replaced due to excessive scratching, and cat odor can get out of hand - some of these were found during routine inspections (and a few could have been prevented with more frequent inspections).We don't do pet deposits (deposit implies refundable) - we do nonrefundable pet fees and pet rent. 

The grumblings I have heard are that you can demonstrate through projections and the schedule of liabilities the need for more of a loan.

It's pretty rare that I have smokers sneak in and I'm not able to clean out the odor without much hassle.

The issue is with the AC system, when it's in the AC mode the house is being filled with bad odor that is coming from the vents.

In retrospect, everything appeared to be going well until I had reached the top of the roof whereby I could not help but notice a strong pungent odor emanating from a package rooftop unit operating on heat mode, an odor none other than 'Aldehyde', a byproduct of incomplete combustion of natural gas.

And cats can be just as bad for odors.

The tenants who live in the unit next to mine complained of an odor that smells like stale cigarette smoke in their apartment.

It was always plugged in so the odor wasn't too bad but it had food, meat juice, and sticky substances in every crack and crevice. 

I would suggest talking to your tenant regarding the pet odor, to see if there is anything they can do to eliminate it on their end.

Ozone machine for smoke or other odors.2.