Queen.Julian, do you have any lawns present in the yard? If not, that is the reason that the person is refusing to use the lawnmower.

The lawnmower is only used to maintain the lawns that have been purchased in the Home Improvement section of the store (West Lawn, Northwest Lawn, Northeast Lawn, Southeast Lawn). The weeds that grow in the various native-growth areas of the yard must be pulled by hand or removed with the Weed Bomb.