ʻO nā ʻāpana pale manu he kila kila a me nā mea hoʻomalu holoholona e pale aku i nā manu pest a me nā holoholona piʻi, ma nā pae infestation āpau a ma nā ʻano mea hoʻonohonoho āpau. ʻAʻole ʻike ʻia nā ʻōpala anti-bird spikes ʻoiai e hāʻawi ana i kahi hopena maikaʻi a lōʻihi hoʻi e pale ai i ka hoʻopilikia ʻana o nā manu/holoholona a pale i kou waiwai mai ka pōʻino.