As an entomologist I have installed these on porches and in sheds and they are not only very effective, but also beautiful. I was sorry to see people’s complaints about paper lanterns not standing up to rain or wind—why would you expect otherwise? You need to place them in sheltered conditions and they don’t last forever. Once I hung a hummingbird feeder below (from the base) and that actually attracted wasps who noticed it was an empty nest—so don’t hang anything sweet below yours! At our community garden, I knocked down wasps nests every other week from inside a new shed until I put one of these up. No wasps for 6 years in a row!! These are not foolproof but the way they work is as follows. When placed in a sheltered spot in early spring as social wasp queens emerge and look for a nest site, they see the nest and think, “gee, there’s not going to be enough food for me and my family here since this other family is here…” Painting your porch ceiling sky blue is also effective. Friends with a wrap-around porch had all sky blue ceilings except one small section that had remained brownish green. They never had any wasps starting nests in the blue, but often in the other area until they painted that, as well.