A spray guard mountable to an aerosol dispenser has a catchment tray, a mounting means and a backsplash. The catchment tray and the backsplash, together are configured for being moveable between a storage position shaped to wrappingly accommodate a curvature of the aerosol dispenser, and an in-use position wherein the backsplash extends substantially perpendicular to the longitudinal axis of the catchment tray. The spray guard may be used to capture overspray from an aerosol dispenser by placing the target object between the nozzle of the aerosol dispenser and the spray guard. Alternatively, the spray guard may be placed in front of small or awkwardly positioned items and used to narrowly focus the aerosol spray. The spray guard can feature a stencil and be used to focus an aerosol spray to transfer a stenciled image on to a substrate.