I have extensive experience with Canada Geese. I can set up goose harassment tools that work temporally if not monitored daily. For long term relief, the geese need to be removed. Denton Wildlife Services will assist with obtaining federal and state permits. Removal usually occurs during the molt (when the geese lose their flight feathers for new ones). A few Canada Geese are beautiful to watch. Hundreds become a human health and safety concern. Damage to lawns and crops can be extensive in a short period of time.
Outside of the molt, I can capture and remove Canada Geese with the use of waterfowl traps and cannon nets.