These insects are very tiny; tiny enough that many of them have been blowing in through the window screen for the past 2 weeks. All of them are white, about the same size, and appear dead already. They are extremely light; the slightest breeze will send them flying. There are two sides of the house with windows- the front side and back side. They blow in only from the back side, where there are trees outside (there are no trees outside the front). Because of this, I think the insects may be from the trees. Does anyone know what these are?
