Bird netting can be used to achieve complete exclusion in certain regions. Netting can be put over any A/C system to keep birds out permanently. We can keep pigeons out of an A/C unit that is mounted on a frame by blocking off the underbelly with a heavy-duty galvanised steel screen. The netting can simply be put over the parapet after installing it in a recessed area. The net will last for roughly 5 years if properly maintained.