The Asurity® PS-01 Pro-Treat® Strip kills odor-causing bacteria, lasts up to 6 months. Use in primary drain pan of cooling equipment including air conditioners and refrigerators. Controls foul-smelling odors caused by mildew, fungi, bacteria, algae, and slime. For use in hotels, schools, colleges, hospitals, nursing homes, airports, and many other locations. 10 strips per pack