Adults with chronic ulcers; pressure ulcers, venous ulcers, diabetic foot ulcers or post operative ulcer will be recruited to the study. Patients that have been recruited for the study will be treated as required for their medical condition. As required, cultures will be taken, IV or PO antibiotics will be given and debridement will be carried out. Patients will be referred to catheterization, revascularization, or amputation as required and the decision to do so will not be affected in any way by the study. CureXcellTM will be used as adjunct treatment to good ulcer care (GUC).