Domestos Original Bleach. Domestos Extended Germ-Kill has a special formula that allows the bleach to cling to the toilet bowl longer than any other bleach. Kills germs and gives long-lasting protection. Features: Super thick Longer-lasting Size: 2L (Approx.) Usage: Apply under rim and leave overnight to kill germs and remove stains For more Household Cleaners at B&M, like bleach, check out our superb range online and buy in-store.