DUX PORT-A-BLUE is a highly concentrated dark blue liquid with a powerful yet pleasant odour. Specially designed for use in portable toilets to minimize foul odours and activate the breakdown of waste solids and paper towels, making it easier to empty tanks. It liquifies solid waste to maintain portable toilets even during heavy usage. It contains powerful odour masking agents which makes it ideal for enclosed toilet areas ensuring your portable toilet stays fresher and cleaner for longer. It quickly breaks down waste and leaves your toilet smelling fresh. DUX PORT-A-BLUE has a multifunction, not only does it maintain portable toilets but helps prevent blocked lines and pipes during pump out making your system run smoother and easier to clean. Biodegradable and septic tank safe.