Blue Diamond 2 litre 'When Nature Calls' Toilet Fluid is a completely formaldehyde free concentrated toilet fluid, designed to leave your chemical toilet (cassette toilets and waste holding tanks, typically found within caravans, motorhomes and boats) smelling pleasantly perfumed and offering plenty of use with the 2L of volume. Safe to use and long-lasting; this formula is great for use in hard water areas and ideal for green fluid only campsites. This environmentally-friendly product is biodegradable and gives off a strong, medicated fragrance, making it perfect for eco-lovers! Key Features Environmentally-friendly concentrated green formula Long-lasting & fast-acting performance Effective odour control Great for hard water areas Formaldehyde-free Ideal for the majority of campsites Biodegradable Fully-recyclable plastic bottle Safe for septic tanks Strong medicated fragrance Suitable for chemical toilets, cassettes & waste holding tanks