1. NEW SOLUTIONS FOR SEWAGE DRAINAGE: Smell Proof Sewer Hose Sealing Cover Helps Reject Odor, Reverse Osmosis From Kitchen And Comes Home With Fresh Air, A Good choice for children and for your family. 2. WIDE APPLICATION: The square design is more practical and can fit in various corners, such as toilets, bathrooms, kitchens, offices, etc. 3. ANTI-AGING MATERIALS: Made of high quality silica gel, it is acid and alkali resistant, corrosion resistant, not easy to age, deformation and durable. 4. EASY TO CLEAN: Silica gel is not easy to stain. You can throw the collected dirt directly into the trash can, then clean the silica gel cover with water. 5. HANGING STORAGE: When not in use, the silicone cover can be hung up to dry, which dries quickly and does not take up space.