Our old netting was removed during some building renos. It had been up for a long time and was ready to be replaced. The install on the new netting seems to be better. It's a nylon mesh fastened to a cable the runs around the outside of the balcony opening. We probably could have went without it. I haven't see pigeons hanging out on the building for quite some time now. Might have something to do with the occasional hawk I see in the sky around the building. I kind of miss the view without the net. But I remember what a pain it was to clean up pigeon mess on the balcony so the net stays.