 After Gardner's death in 1888, the business was left to his sons Alfred and Ernest, and following the death of Arthur in 1917, management duties were maintained by a Mr T. Kirkpatrick.With chemist W Doolan, Kirkpatrick developed 'Kirk's Ginger Ale', which would go on to become the company's flagship product.During the 1930s, Kirkpatrick left Owen Gardener & Sons to work for main competitor, Brisbane bottler 'Tristram's', selling 'Kirk's Ginger Beer' under their brand.