Soap dissolves in water and washes away. Fat doesn't.
Washing soda crystals are a popular household cleaner for greasy things and can be regularly used in sink traps and gullies. Can also be used to desludge washing machines.
Washing soda crystals are a popular household cleaner for greasy things and can be regularly used in sink traps and gullies. Can also be used to desludge washing machines.