If you want to rid the property of the worst tenants you will want to have them vacated by closing per your contract.

Is it easier to get rid of bad tenants that way?

I gotta get rid of it, but I'm deferring the loss. you can sell it, lose money now, but fresh start.

Best way to rid yourself of fear is to take action. 

PMI will depend on your lender and loan, but if it comes down to it worst case scenario, once you get 20% equity you can refi to get rid of it depending on interest rates at that time.

I'm almost positive they did this intentionally, because they then asked what kinds of dogs were acceptable as they would have to get a new baby after they get rid of the Great Dane.   

There are a lot of Landlords that have no clue what they are doing so they get into a bind and either can't get rid of bad tenants or they just get tired of managing the property.

I just have my contractors drill a hole in the locks and yank them out.About a year ago, I actually had the listing agent threaten to press charges because I did that and got rid of his lockbox.

Give them just a few days (no more than a week) to rid of the pets. 

They hire a QUALITY property manager and completely rid themselves of a job.