Dealing with tenants calling  day and night, potential lawsuits, vacant properties with no income, evictions, vandalism, shelling out money for maintenance, irresponsible tenants damaging your investment, etc., etc., can give you an ulcer before you know it.

On top of all the problems associated with tenants and toilets, do you really know and understand the landlord tenant laws of your state?  Many of these laws have stiff penalties for landlords who aren't' abiding by the letter of the law!