It all depends where in Bmore you invest though and I would just say do your homework because it is a whole different animal out there.

Home Depot sells animals traps based on size.

A true historic home in a designated historic neighborhood...well that's a different animal, but could still be profitable.

Make sure that air flows freely and that each has an operable damper to prevent back flow of outside air and to keep small animals from entering your home.Inspect and clean all weep holes for water drainage (windows).On a seasonal basis:Every six months, inspect and service either your heating or air conditioning system, depending on the season.Twice a year, you should inspect and repair the following caulked areas, as necessary.

You pay more interest but the process is smoother .

Agreed, I would like to add that it does take work but after the stepping stones the path becomes smoother. 

So there aren't any companies that vet lendees and make the process more smoother and protect everyone involved?

@Deon Brown pinpointing ARV's in the Pittsburgh area is it's own animal.

If your lease agreement has a clause about not being a noise disturbance I would give the tenant a written warning and have the next door neighbor call animal control to file a complaint.

Commercial and residential are really different animals, IMHO putting SFH's into LLC's is a royal pain when a simple insurance policy will protect you as well.