The product didn't work well for me. I can't say that the pigeons left. As soon as they got used to it, they came back normally.

The product comes in two pieces (wings - body) with two notches that snap the wings onto the body, but the hold is not reliable, so use plenty of instant glue. Now, regarding the placement and effectiveness, it has a string with a ring; you can hang it with a pole in a more open area so that it is more visible to the pigeons. For a couple of days, it is effective, but then they get used to it and approach the flat surfaces around it

Unfortunately, the 3 stars are not for the construction which is quite good, after a short period of time the same thing happens again! The birds are not afraid of anything unfortunately.

The product is very good but ineffective...
After a week of installing it, the pigeons coexist with it...
The only solution is plastic spikes to prevent rusting.