Housekeeping managers' biggest maintenance worry about sensor-operated soap dispensers is often related to batteries. Although custodians do need to watch for battery failure, generally battery replacement is simply put on a regular schedule.

In most facilities, batteries in soap dispensers last for one to two years. However, some high-volume buildings may have to replace them once or twice a year.

Regardless, replacement batteries are inexpensive and have minimal impact on facility budgets. Manufacturers are being proactive about fears over battery failure. New "hybrid" products on the market can operate as mechanical or sensor-operated so users can push for soap if the sensor isn't functioning properly.