It has successfully driven away noisy teens from a grocery store in the welsh town of barry and a shop in stapleton ' s home town merthyr tydfil , making smoking , lounging and foul - mouthed youths a thing of the past 斯特普尔顿曾在威尔士巴里镇的一家杂货店和他家乡泰德菲尔镇的一家商店外试用了该装置，结果那些常在店铺周围吵吵闹闹的小混混们渐渐离开。
