Renovation of the Bathroom Drainage System Let's talk about captive waste.(https://www.yerjia.com/product/basin-waste/captive-waste/) Captive waste is a drainage fitting that is fixed to the bathroom vanity or bathtub and controls the flow of water through a sealed mechanism. This design prevents water from being wasted while ensuring that water drains smoothly when needed. The sealing performance of Captive waste is very critical. It can prevent the backflow of odor and bacteria and keep the bathroom clean and hygienic. In our products, captive waste adopts advanced sealing technology to ensure its reliability and durability in long-term use.