How Clean Is Your House? is a British entertainment/lifestyle television programme in which expert cleaners Kim Woodburn and Aggie MacKenzie visit dirty houses and clean them up. The thirty-minute show was produced by Talkback Thames, the UK production arm of Fremantle (itself part of the RTL Group), and aired on Channel 4 from 2003 to 2009. Though a ratings success, Channel 4 announced that they had decided to cancel the series in 2009 in order to make way for new programming. Format Each episode of the programme followed the same formula. Accompanied by a dramatic score of horror movie music, Woodburn and MacKenzie explore the abode on their own, examining the extent of the mess and looking for any particularly horrible areas. They then meet the resident before the cleaning begins, assisted by several professional cleaners. During this process, which takes up the bulk of the show, tips are shared for tackling particular cleaning tasks with the residents, often relying on traditional solutions rather than proprietary commercial cleaning products. During the cleaning, MacKenzie takes swab samples from the filthiest areas of the house and has them analysed in a lab, often revealing numerous kinds of bacteria, frequently E. coli or Salmonella. Residents of the homes often have health problems that directly stem from the air quality or pathogens present before cleaning; Woodburn will show the residents her findings in an effort to make them understand the connection between their health and their home's condition. The final section of the show has Woodburn and MacKenzie unveiling the freshly cleaned home to the resident. In earlier episodes, they would return to the home several weeks later to see if the cleaning was being maintained. The show makes a point of thoroughly cleaning carpets and furniture the resident owns, and not replacing dirty or worn items just for the sake of the final reveal. In a few particular cases in which a resident lacked basic items of furniture (such as one who might have been sleeping on a mattress on the floor rather than a bed), Aggie and Kim might coordinate with neighbours or local secondhand shops to donate items. Woodburn takes the role of a dominating woman, scolding residents for letting their homes get so bad. She is sometimes playfully flirtatious with male residents. In contrast, MacKenzie (whose previous jobs included associate editor in Good Housekeeping and working for MI6) assumes the