Device and method for indicating the dispensing of a predetermined amount of a material

A dispenser for a material, the dispenser having a system for indicating the dispensing of a predetermined amount of the material, comprising:

• a. a source of material to be dispensed;
• b. a housing having an internal cavity sized to permit insertion therein of the source of material to be dispensed;
• c. dispensing means disposed within the housing for dispensing into the environment the material from the source of material to be dispensed when the dispensing means is operational;
• and
• d. a system for indicating the dispensing of a predetermined amount of the material to be dispensed, which comprises
• i. a timer for determining the amount of time the dispensing means is operational;
• ii. a calculator for multiplying the time that the dispensing means is operational by a factor representative of the frequency or intensity of operation to produce a dispensing score representative thereof;
• and
• iii. signal generating means for producing a signal indicating the dispensing of the predetermined amount of the material to be dispensed when the dispensing score is at least equal to a total score required for dispensing a predetermined amount of material from the source of material to be dispensed.