Experiment: Mosquitos
They are driving me nuts again. This is what our mosquito net currently looks like.
They do deserve some nuance. İt are only the females in the breeding season that require blood. The rest of the year they drink nectar, and so are used as pollinators by plants. They are also a great source of food for other insects and (young) birds.
Still anoying though, so here's some CSS to cope.