I use to pity our grounds cleanup crew on Mondays. I bet they wish they had a shotgun.
Actually, the geese problem is not nearly as bad as it used to be. We have about a 1 acre pond here in the middle of our office park.
They installed a couple fountains to move the water around and discourage the landing/takeoff of the birds.
The biggest change was there were some ladies that worked at the bakery across the street. They used to feed the geese and ducks every afternoon the day old bread. My boss put a stop to that. We had so many one year(over 200) that they did not migrate because they were being fed.
At night they come out of the pond and sit over on our parking lot because the pavement is warm. Then they eat the grass up close to the building. They then make their deposits along the way. So, our parking lot turns into a minefield.