These are a form of ovitrap: https://en.wikipedia.org/wiki/Ovitrap https://en.wikipedia.org/wiki/Ovitrap There are many forms that require even less investment

These are a form of ovitrap: https://en.wikipedia.org/wiki/Ovitrap https://en.wikipedia.org/wiki/Ovitrap There are many forms that require even less investment. I made some out of some plastic water bottles and a few pairs of old socks, for example. There are also lethal ovitraps, which kills the mosquito, but I havent experimented with those.