Bean, the first of your two sites also has a lot on goose control. Click on those words, and up poop sepveral more clickable lines, under these headings:

Border Collies
Turf Grass Goose Repellents
Exclusion Methods: Goose D-Fence
Cleaning Equipment: Goose-Poop Buster
Scare Devices, with five separate clicks for High-tech Distress Calls; Cannons/Scare Guns; "RoboGoose" Remote controlled goose robot; "Dissuader" Hand-held Laser; and Gator Guard (floating replica of an alligator head))

The link for robogoose claims, "Equipped with headlight eyes and two-way voice communication. Optional remote video, tear gas and pepper spray, us proud Canadians can flush terrorists from caves, pursue them down corridors and record and observe them as their population decreases. Look at us as affordable and small Canadian tanks."