This study compared the efficacy of two hydrogel dressings in the debridement of necrotic pressure sores. This randomised, controlled, assessor-blind, clinical trial involved 50 patients whose wounds were assessed weekly using computerised wound analysis for four weeks or until debrided. Debridement was identified when there was 80% red granulation tissue present and no sign of necrosis. There were no statistically significant differences in comfort, wound odour, surrounding skin condition or time to debridement between the two groups.