The invention relates to a method for producing an ultraphobic surface on aluminium as the supporting material and to the resulting surface and its use. A converter of the Continuous Emission Monitoring System receives a gas sample containing vaporized mercury from a probe. The optical component is made of photonic band-gap material. The wildlife deterrent system is configured to reduce risk of danger to the wildlife in response to movement of the wildlife within a predetermined distance from the object of danger as tracked by the receiver.