Nearly four years after Los Angeles County passed new requirements for pornographic performers, the porn industry has spread to nearby counties like Ventura County — and much of that filming is happening in residents' homes with or without their knowledge, the NBC4 I-Team has learned. Private citizens believe their home is being rented out for a few days — perhaps never knowing it's become the set of a raunchy pornographic title. An enema kit, bottle of lubricant and a business card are among the things Kristina Knapic said she discovered after renting her house out on the online rental service Airbnb. Doing a bit of research, she learned the person who rented the house was Michael Lucas, an adult performer and producer, and owner of Lucas Entertainment. Thyne and attorney Lacy Taylor said Knapic contacted them with concerns the pornographic film could damage her house's image as a rental property. Lucas said he's worked in adult film nearly 20 years, and using rentals for porn shoots is common.