I have this on my Taubenabwehr windowsills and on my large balcony on the armor. The little balcony I made completely sealed with a bird net, because I there also hinstelle laundering and all pigeons Schei had just fed * e. With baby and dog, it is just disgusting! But the large balcony of course I did not want to close with a net, so thought I'd do it once ran the spikes. And I have seen so far on the large balcony no single pigeon. Was well worth it for me to buy these parts. I can only recommend.
