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Fifty mosquito repellent products, including mosquito repellent patches and wristbands, prove to be of little help, said Beijing quality supervision authorities after conducting sample tests recently. 近日，北京市质监局对包括驱蚊贴和驱蚊手环在内的50款驱蚊产品进行抽样检测后发现产品无一有效。 Bought from online and offline stores, these new mosquito repellent products, with price tags varying from 5.2 to 66 yuan, all boasted a plant-based formula with a long effective duration for babies and pregnant women. 这些新型驱蚊产品是从线上和线下商店购买的，价格从5.2元至66元不等，均号称采用植物配方，驱蚊效果持久，儿童和孕妇适用。 The result is obvious and disappointing. These products, regardless of a touted period of effectiveness ranging from five hours to 60 days, did very little in preventing mosquitoes. 检测结果是显而易见且令人失望的。这些产品，不管有效时间是5小时还是60天的，都在驱蚊方面收效甚微。 | 
