The effect / function properly. After a few hours the first flies and mosquitoes were the stiffeners. We live country and just in the summer a lot of flies. Initially, the strip smell something strange after the glue. But the smell is not "chemically" but smells more natural. While it does not smell of lavender - but really bad we did not find it. After no more than two days you can smell nothing. The strips are working so about three weeks. Then you have come too full. Then come only rarely to fly - perhaps the attractants are then evaporated. We hang the strip center of the room (kitchen) over the average working block. Since most flies pass on. Eintags (fruit) flies are also captured well. Mücke. get lost from time to time - but most ücken we begin with a UV trap. We buy the strip now in its second year here at Amazon and they will also continue to buy. Each individual roller is a thumbtacks.
