Dosing device and system

The present invention relates to a dosing device (10) or system for dispensing a plurality of tablets (1), which each comprise at least one active ingredient for an automatic washing process, into an automatic washing machine, wherein the dosing device or system is for dispensing one or more, but not all, of the plurality of tablets at once into the automatic washing machine, wherein the dosing device or system comprises: a container (12) for storing the plurality of tablets, wherein the container comprises an exit port; an outlet for delivering the one or more tablets from the container into the automatic washing machine; a metering mechanism located between the exit port of the container and the outlet, wherein the metering mechanism comprises a wheel (66) which is rotatable between a first position, in which the one or more tablets are receivable from the exit port, and a second position in which the one or more tablets are deliverable to the outlet.