A dispenser includes a housing that defines a first opening and a second opening. The first opening provides a first path of fluid communication between a first interior volume of the housing and an exterior of the housing. The second opening provides a second path of fluid communication between a second interior volume of the housing and the exterior of the housing. A divider is positioned in the housing between the first interior volume and the second interior volume. The divider defines a third opening that provides a third path of fluid communication between the first interior volume and the second interior volume. A valve allows fluid to flow from the second interior volume, through the third opening, and into the first interior volume and prevents the fluid from flowing from the first interior volume, through the third opening, and into the second interior volume.