Keep drains gullies and grease traps clean with this 2work enzyme drain maintainer this powerful product uses a carefully chosen selection of enzymes to break down thick oils fats and grease from drains eliminating blockages and bad odours use it manually as needed or with an automatic dispensing system for nightly cleaning this pack contains one 5 litre bottle enzyme based cleaner for drains gullies and grease traps enzymes digest fats oils grease protein and starch breaks down bad