110 removing sensor housing 306 may facilitate removing sensor 310 removing sensor 310 may be necessary to perform maintenance such as cleaning or replacing sensor 310 sensor housing 306 may contain clips 308 clips 308 may be childproof and or used to securely fasten sensor housing 306 to removable storage tank 110 in addition sensor housing 306 may be permanently connected to tub 116 pedestal 102 or appliance via fitting 312 sensor housing 306 may be operatively used in conjunction with disposable removable storage tanks for example removable storage tank 110 may be a one time use tank a consumer may purchase detergent in a one time use tank the consumer may remove a portion of the one time use tank such that sensor housing 306 may be inserted once the contents of the one time use tank are depleted the consumer simply replaces the one time use tank during operation of a washing machine a user may select a predetermined mode this predetermined mode may for example consist of washing whites darks delicates full loads or fractional loads amongst other options when selecting this particular mode the user may press a button on a washing machine controller upon pressing the button on the washing machine controller a pump may add detergent from removable storage tank.