Exactly this. There are some smaller ones that are constantly water-filled but they have no mosquito larvae either. We already speculated that the water in thes

Exactly this. There are some smaller ones that are constantly water-filled but they have no mosquito larvae either. We already speculated that the water in these small vessels might become too warm because they thrive in the larger garden water tanks here. They are pretty harmless though. No diseases transmitting and the bites themselves are harmless. Also nets at windows are somewhat common here.