Drain cover for a drain opening of a drain channel of a sink, a tub or the like, the drain cover being formed around a centric longitudinal axis and comprising, from top to bottom: a plate-shaped covering cap with an upper face visible above the drain opening and an opposite lower face with a connecting element which is shaped annular around the longitudinal axis and which faces the drain opening; a container with an upper and a lower container portion, formed cylindrical about the longitudinal axis; the upper container portion being connected to the connecting element of the covering cap and the container therefore being at least partially sealed towards the covering cap, and the lower container portion being sealed at least to the point that it retains, in a container interior, a substance which is gradually consumed in water; the container having at least one passage opening permeable to water in order to exchange water and materials dissolved out of the substance with the drain channel via the at least one first passage opening; at least three spacers being arranged on the lower face of the covering cap around the connecting element and outside an area of the drain opening in the assembled state; which are connected to the covering cap and adapted to keep an outer edge of the covering cap spaced from a sink bottom around the drain opening to the extent that the water in the sink can flow towards and through the drain opening; characterized in that a bristle portion is arranged around the container which is formed cylindrical about the longitudinal axis with a plurality of bristles extending radially to the outside; the bristles extending substantially perpendicularly outwards up to an outer diameter of the bristle portion which is smaller than a different outer diameter of the edge of the covering cap. a plate-shaped covering cap with an upper face visible above the drain opening and an opposite lower face with a connecting element which is shaped annular around the longitudinal axis and which faces the drain opening; a container with an upper and a lower container portion, formed cylindrical about the longitudinal axis; the upper container portion being connected to the connecting element of the covering cap and the container therefore being at least partially sealed towards the covering cap, and the lower container portion being sealed at least to the point that it retains, in a container interior, a substance which is gradually consumed in water; the container having at least one passage opening permeable to water in order to exchange water and materials dissolved out of the substance with the drain channel via the at least one first passage opening; at least three spacers being arranged on the lower face of the covering cap around the connecting element and outside an area of the drain opening in the assembled state; which are connected to the covering cap and adapted to keep an outer edge of the covering cap spaced from a sink bottom around the drain opening to the extent that the water in the sink can flow towards and through the drain opening; characterized in that a bristle portion is arranged around the container which is formed cylindrical about the longitudinal axis with a plurality of bristles extending radially to the outside; the bristles extending substantially perpendicularly outwards up to an outer diameter of the bristle portion which is smaller than a different outer diameter of the edge of the covering cap.