Triple odour shielding: The transparent window of the drain fitting stores water, forming the first line of defence against odours. The odour-shielding sealing head and the inner candle at the end form a double protective function. The sealing head clogs the outlet, and the inner candle reinforces the protection to effectively protect against odours. Double insect repellent: The odour-shielding sealing head at the end of the drain pipe of the insect resistant sink kit can both shield odours and prevent insects from crawling out of the interface. The odour-shielding inner candle can prevent most insects from entering the tube and makes the environment cleaner. Easy installation: The sink kit has a simpler structure compared to conventional drain accessories for sinks. It does not require tools and screws, and even beginners can assemble it alone and easily. High compatibility: The interface of the siphon sink has horizontal and vertical connection types. Together with a stretchy hose, it can be easily installed and used in tight spaces. Use scenarios: - In a kitchen sink under-sink area with odour and pest concerns, this kit provides a barrier while fitting in limited space. - In a bathroom or utility sink where space is tight, the horizontal/vertical interfaces and stretchy hose enable quick, tool-free setup. - In rental apartments or homes with varied pipe layouts, the flexible connections allow easy adaptation without special parts.