 We set it up in the spring. It runs straight through the fall. And what it does is reduces the mosquito population and prevents those mosquitoes from biting us. And I'm telling you, it works incredibly well. We probably get a few bites a year with those Nyanotraps working. And I've added more over time and very happy with that. But the thing is, it's not like a bug zapper where you put it up and you expect it to work right away. It takes about three weeks.