Easiest way to get rid of mould in shower?

On tiles and grout a mould spray or diluted bleach left for 10 to 15 minutes, then a scrub with an old toothbrush, gets most of it. The part nobody likes hearing: black spots inside the silicone sealant are growing under the surface and won't clean out, no matter what you spray. Cut the old bead out, clean and dry the gap, and reseal. After that a squeegee on the walls and the fan running after every shower keeps it from coming back.