This guideline is created to explain to users of the INSTA 800 standard the different situations involved in buying and selling and evaluating a cleaning service. The guideline provides practical tips for preventing and resolving problems that users may face when purchasing / selling / evaluating a cleaning service using the INSTA 800 standard.
To compile this guideline 77 companies using INSTA 800 were interviewed in 6 different countries (Estonia 16, Latvia 1, Finland 15, Iceland 3, Sweden 15, Denmark 27).