Shocks birds with its penetrating, predator scare eyes and its reflective tentacles. Any movement of the wind will set the octopus into motion, causing it to spin and dance around. Brilliant flashing and scary eyes signal danger to the birds. For best results, put the octopus up just before the crop starts to ripen, so the birds do not become accustomed to its presence over a period of time. Remove after harvesting. For persistent long term bird problems, it may be necessary to use this together with other methods of bird control. Place the octopus above the crop being protected and place one octopus every 1/4 acre.