The primary research objective of this study is to assess the total response at 14 days to treatment with either steroid tape or silver nitrate therapy on the over-granulated tissue surrounding the PD exit site. Assessment is by two blinded independent investigators (patient and therapy administrators will not be blinded to the therapy received). At each of the study visits, a series of photographs will be taken according to a study specific standard operating procedure and the two assessors will score the exit sites from the photographic series. There is no standardised scoring system for over-granulating exit sites so a scale has been devised: Score 1: Complete response:complete disappearance of over-granulation Score 2: Partial response: reduction in size or an obvious reduction in intensity of over-granulation Score 3: No change, appearance identical to that of pre-treatment Score 4: Worse, increase in size or increased intensity of over-granulation