OP's powebill goes up by $500. Discovers room-mates bitcoin mining rig hidden in the garage.

Nightmare tenant. My dad rented out our whole house to these Christians to make an extra thousand a month, who only paid rent on Sundays inside a church and my dad gave them a discount. After two years they destroyed our house, the entire house had mold everywhere, curtains had rust on them, two holes in every room, every door bared holes and cracked apart and nailed back, cement was hammered in the garage and yard, every cabinets was warped by water damage or bubbled, bath tubs were corroded by acid, garage door opener broke, a window broke, dog shit everywhere in the back and everything was dog chewed, water heater broke right when they left, rust over floor boards in every room, a million other problems. They didn't pay the last bills, and had changed their names and hid their new address, and the electricity cost was nearly $500 and the water cost was $200. Service companies kept sending us bills with late fees for services like cutting copper pipes. After my dad replaced the carpets, and painted over the marijuana smoke stains, with spider webs everywhere, spiders were still coming out of every wall and outlet. They grew marijuana in every room of the house, which is a common reason for the spider problem. I don't know about the massive electricity usage. Neighbors were furious, because of noise and parties every weekend and visitors every night past midnight. My dad lost money because of these tenants and we've spent six months working frustratingly to fix everything.

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