This Bio-D concentrated Toilet Cleaner is effective and reliable. An independent test in 2015 found it removed twice as much limescale as the leading eco brand. You can Use this wonder product under the bowl rim and leave overnight for best results. It's concentrated formula which contains a refreshing lemongrass scent is an effective limescale remover. The ingredients are naturally derived that will make your house green and clean. It is the best and safest to use for us and our future. Features and Benefits SensitiveBeing hypoallergenic, and free from petrochemicals, phosphates, preservatives, enzymes and synthetic perfumes, you can rely on this cleaner to minimise the risk of allergies. PowerfulIt effortlessly leaves your toilet looking fresh and clean. Environmentally friendlyThis toilet cleaner is made from natrually derived ingredients. Specifications Size:5L Free from petrochemicals, phosphates, preservatives, enzymes and synthetic perfumes Cruelty Free Accredited by All