It must work cuz I've had less mosquitos this year. I was determined to beat the Georgia bugs early this year, so started in Spring exterminating everything outside around the foundation. I put some of these in drains that go from downspouts under sidewalks where I knew water was standing, in the bottom saucers of my large outdoor pots, crushed some and sprinkled it into some ground cover. This helpes a lot. It's still GA, still hot and humid so there's always skeeter, but this really helped.
Rating:
[5 of 5 Stars!]