The Ecozone Forever Flush Toilet Block in Indigo is so easy to use, simply pop it into your toilet cistern and this eco-friendly alternative to traditional toilet rim hangers will continue to work effectively for up to 2000 flushes per jar, helping to prevent toilet bowl stains and limescale with every flush. The indigo coloured water that\'s gradually released indicates the toilet bowl is sanitary, stain free and deodorised. Natural toilet cleaner Toilet block twin pack provides up to 4000 flushes Non-toxic, biodegradable and bleach-free formula Septic tank friendly cleaning product Prevents toilet bowl stains and limescale build-up Fully recyclable packaging Also available in a blue twin pack option How to use 1. Clean toilet bowl with a toilet brush 2. Flush the toilet to lower the cistern water level 3. Place Ecozone Forever Flush inside the cistern Note: Please allow up to 7 days for the product to be fully activated. DO NOT remove the blue lid, remove the seal or open the product. Ecozone Forever Flush Toilet Block 2000 - Indigo Twin Pack is part of the range of Ecozone natural household cleaning products. Keep every room in your home germ-free and looking its best the naturally with Ecover antibacterial cleaning products and kitchen cleaning solutions in spray, tablet or stick form! Shop the full range of popular Ecozone products, including Ecozone microfibre cleaning cloths and Ecozone speciality products, available from Big Green Smile.