Laundry treating appliance with cleaning system for residual treating chemistry

A laundry treating appliance comprising:

• a treating chamber receiving laundry for treatment;
• a dispenser fluidly coupled to the treating chamber;
• a reservoir holding a treating chemistry and removably mounted to the laundry treating appliance;
• a fluid coupling comprising a first coupler carried by the dispenser, and a second coupler carried by the reservoir and releasably fluidly coupled to the first coupler;
• a cleaning sprayer positioned to provide a spray of cleaning fluid directly onto the first coupler;
• a sensor providing an output indicative of an absence of the reservoir;
• and
• a controller coupled to the cleaning sprayer and the sensor to effect a spraying of cleaning fluid onto the first coupler in response to the output indicating the absence of the reservoir.