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Sewer blockage often happens in the bathroom because of the piling up of wastes like hairs. And the normal sewer strainer is difficult to clean. The Filter Sticker functions as an one-off sticker, which is made from water-proof materials and can stick hairs or dust in very wet status. When finish using, you just need to tear it off and throw it away. It's much more convenient.
Lei Shi, Yujie Hong