Carly & Nesta, Rob & Soo (S04E01)

Carly, who has been diagnosed with OCD, dedicates as many as seven hours each day to scrubbing her two-bedroom apartment. Meanwhile, Nesta from Staffordshire welcomes pets to roam freely throughout her home. Rob, who cleans his own house as many as 30 times daily, takes on the challenge of assisting Soo, a widow, and her son Joe, who have gathered a plethora of treasures from charity shops.