A shower sterilisation system is provided. The system comprises shower apparatus including water supply means (2), a shower head (6) and shower conduit means (4) connecting the shower head to the water supply means. An applicator device (16) is located between the water supply means and the shower head for receiving a sterilisation or biocidal composition in use and allowing said sterilisation or biocidal composition to be delivered to one or more parts of said shower apparatus.
