While they have the right to quiet enjoyment, you also have the right to go into your own property periodically to check the condition.....and check for extra tenants, extra pets, extra criminal activity, damage, repairs, and such so that your property stays in great condition.

I only have one issue with “house hacking” and that is that my wife and I would really like a SFH for pet purposes and she is set on not sharing a house either.

Tenants signed a lease with understanding that no pets were allowed. 

Hi Calvin, I looked at that one too as it could be a good deal.It's definitely going to be more than 10k based on the details in the MLS:"Just vacated by tenant; Needs cleaning and the flooring is likely to need replacing throughout; Please be aware there is a STRONG PET ODOR in the house and pet damage in places; One window has broken glass and one shower is not usable; I believe one of the toilets is not functioning as well.

Tenant adds an unauthorized pet, we inspect and document that it was removed.

The prospective tenant has offered a pet deposit (it's illegal to require one in our jurisdiction).

I run pet Friendly places and make it clear that animal rescue is my chosen charity.

Pet rent or deposit?

My lawyer said that the best way to proceed is to get her for non-payment and file for eviction.Today she is due to pay the second half portion of the pet deposit($250/500). 

.: no pets, maintining property appearance, etc.