This study explores the library equivalent of the towels on deck chairs phenomenon of students reserving library seats -the practice of leaving personal belongings unattended at a library study space for long periods of time, rendering the desk unavailable for use by others. It presents highly inefficient use of high value academic library space. This study measured the impact and effectiveness of a desk clearing intervention put in place to alleviate the space constraints caused by the practice. The components of this single site study were focus groups that explored student attitudes and motivations around desk reserving, a survey to assess user perceptions of the intervention and analysis of access gate data to identify behavioural changes following the intervention. Findings suggests that the phenomenon is a normal part of the student culture in the University library where this study is based. In addition to space constraints during busy periods, the sense of community, trust and peer support that users feel in the library appear to be contributory factors in desk reserving. The desk clearing initiative was introduced in response to user feedback, to maximise the availability of seats for the benefit of all users. It was successful in reducing the practice of seat reserving. Its impact was most noticeable in the early morning, where the practice of reserving seats for use later in the day disappeared. The initiative was welcomed by library users. The 'Every Seat Counts' campaign is now a regular part of the end of each semester in the THE ANONYMOUS INSTITUTION.