I would not recommend this unless the fly problem is very small, I placed two of these in our covered patio but see no change in the flies, I could have put out empty milk cartons and got the same effect, zero! Really I haven't seen a fly on them or a dead fly anywhere, I wish I had only bought one
I am educated person and I could not figure it the directions. I had to assumes alot and figure our alot of how to dos. Finally went to their web site to get more info still I was not completely clear. I usually don't return stuff we buy but it was close! We bought for the backyard with small fly problem. Too much trouble to figure it out to set up and messy. It was not worth it!
These came recommended from a friend, but I was very disappointed in them upon receiving them. We followed the directions and placed them where directed. We have NOT seen a decrease in flies even after 7 days... and there are only a few (less than 10) around the the strips --- Maybe I got a dud, but I spent 27.00 on these and wasted my money. Very disappointed in them!! :(