How Does the Bottle Trap Work? In modern home life, the design of the bathroom drainage system is very important. It is not only related to the convenience of daily life, but also directly affects the cleanliness and hygiene of the home environment. In many drainage system designs, the bottle trap (https://www.yerjia.com/product/bottle-trap/)plays a pivotal role. The bottle trap is a common drainage pipe design that is shaped like a bottle, narrow at the top and wide at the bottom, with a curved part in the middle. The main purpose of this design is to form a water seal in the drainage system to prevent odors, bacteria and harmful gases in the sewer from flowing back into the room through the drain outlet.