1.Suitable for homeowners, renters and anyone who wants to keep their kitchen or bathroom with fresh smells. It is also perfect for landlords and property managers who need a granted and effective solution to common drainage problems. 2.Our drain odour stoppers feature a backflow preventer that keeps insects and bacteria at bay. With standard 50 mm and international 75 mm sizes, easy to install and suitable for most pipes. Has a large drainage capacity and does not collect water and does not cause backflow. 3.Don't let foul odours ruin your experience. Trust our drain odor stoppers to keep your drain fresh. No matter you wash dishes or take a relaxing bath, you deserve a pleasant and odourless experience. 4.Install our drain odor stoppers in a sink, shower or bath to prevent unpleasant odours from spreading. Perfect for busy kitchens and bathrooms and provides a hygienic, comfortable environment for you and your family.