The Canada goose is abundant in the United States due to conservation efforts in the 1960s, according to National Geographic. Many Canada geese have begun to alter their migration habits and often prefer to stay in the U.S.'s many parks, lawns and golf courses. The geese eat the plants, leave waste and often harass people by squawking and chasing after them. You can purchase commercial products designed to deter the geese from entering your yard, but you cannot make the geese repellents yourself. However, you can use other natural, non-chemical methods of deterrent.
Clean up food that may be left in your yard and place lids on your dustbins, so discarded food doesn't attract the geese into your yard.
Put scarecrows of people or animals out in the yard, either sitting or standing. Geese consider animals and people threats to their safety and won't enter your yard if they think someone is already there.
Place movable objects in your yard, such as balloons. Tie balloons or plastic grocery bags to lawn furniture, trees, or sticks you have placed in the ground. Geese are frightened of anything that moves because they feel threatened.
Place swan decoys in any body of water that is close to your house. Geese are frightened of swans, so they won't land in water with swans.
Build a fence or plant tall grasses or shrubs in any area that may separate you from a body of water. Geese access your yard by landing in water, then walk out and onto your yard. They can't get in your yard if they have to get past tall grass, shrubs or a fence.
Keep your dog out in the yard, if possible. It will probably naturally chase away the geese when they enter the yard, and its mere presence will most likely keep the geese out.
It may be illegal to kill Canada geese in your area.