My "good" tenant has snuck a dog in? What would you do?

[R P]

There is nothing wrong with you looking at her tweets. You are running a business and you should use every available resource to protect your business investment.

Since you did not confront her when she signed the new lease, you should do an annual inspection. Look for evidence of the dog, such as food or water bowls, doggy smell in the unit, doggy toys, etc. Also, what you can do is go over when she is not home & ring the door bell. The dog will most likely bark.

At that point , let her know that you know she has a dog and give her a 7 Day Notice to Cure. She either pays the pet deposit or finds another home for the dog in 7 days. You have the right to inspect the unit to be sure the dog is gone. If you suspect that the dog is still there, it will be difficult to prove if you decide to evict her for a lease violation. But you have to stay in charge and if you don't proceed at the end of 7n days, you have just trained your tenant that she can do whatever she wants without consequences.