However, if tap water is left standing for a long period of time, the chlorine or other chemicals may dissipate, and the water may become warm enough for mosquito larvae to survive. In these cases, mosquito larvae may hatch and develop in tap water.
To prevent mosquito larvae from breeding in tap water, it is important to empty any containers that are filled with water, such as birdbaths, flower pots, or rain barrels. Additionally, it is important to keep gutters and drains clean to prevent water from pooling.