For example reminder to replace HVAC filter every 3 months, to ensure pets are vaccinated yearly, to ensure tenant sends me copies of renewed vehicle registrations and insurance etc.

An owner brings in a 20-pound dog for a rabies vaccine.

Fun fact on homelessness, they actually invented a magical vaccination for that "disease" many MANY years back that has all but 100% effective rate.

They are fully responsible for cleaning up after their pet, covering any damage caused, maintaining up-to-date vaccinations, and being liable for any harm caused to people or animals.

Quote from @April September: I don't drink coffee( never have ) and you suffer from mental illness ,called COGNITIVE DISSONANCE.My post was for the smart people who care about the truth.Enjoy your slavery and your stupidity and don't forget to pay your taxes, mortgage that you never had, " your" car registration and your prepaid utility bills.And of course, don't forget your vaccines. 

We do allow a well-trained dog, preferably large, no puppies and no breeds not covered by our insurance (vet records showing breed, age, proof of current vaccination and any required pet license).

I now require any animals brought onto the property for any length of time, even service and emotional support animals, to be registered with petscreening.com or otherwise verified through a third party, and if tenants or their guests are not happy with that, they can send the documentation directly to me (vaccination records for the animal and a doctor's note with medical license and clinician contact information be sent to me).

When I went to Puerto Rico the host requested an ID plus picture of my vaccine card and I didn't think twice and showed it.

For one, this recession was really self-inflicted meaning that as soon as everything opens back up, hopefully after a vaccine, it should generally mean business as usual.

In the case of a SA or ESA, you as the landlord has the right to verify the SA or ESA, by request to see documentation and call to verify with the provider to make sure the certification is legit, valid, active and current, and wellness documentation that the animal is in good health, free of parasite, flea, ticks, vaccinated etc...