I screen carefully and very rarely have to ask a tenant to move out. But when I want them out, I really want them out and don't want to wait 12 months to get rid of them.
My very worst tenant was completely wackadoodle crazy on top of being a demanding whiner. He came with an 800 credit score, excellent income, and sterling landlord references.
If I'd been stuck with him for 12 months, I would have shot him well before the lease was up.
Did I mention he was nuts? He had a long drawn out temper tantrum because it was cold in the house, yet refused to turn the heat on because he "couldn't afford to run the furnace". He was furious because I couldn't get the temperature up without turning the heat on. (it was SNOWING outside!). He kept showing me that he could see his breath, and he had a thermometer to show me (repeatedly) that it was only 50 degrees inside the house.
He also had a temper tantrum because he vacuumed the rug and got 1/2 a canister of "dirt". His roommate had two 130 pound hairy husky dogs. Yet I was a slum lord because there was dog hair in the carpet and the house was "filthy".
He wanted me to replace all his groceries, have a hazzmat team disinfect the house, put him in a hotel, and pay for all his restaurant meals, because he thought he saw a mouse. No evidence of a mouse, but I set traps and bait. When he announced that he was going to report me to the housing authority because I wouldn't call the hazzmat team in, he got his 30 day notice on the spot.
Seriously. He had excellent landlord references. The only thing I can think was that he went off his medication.
Any time I hear the word "lease" I think of that tenant.