Concentrated toilet cleaner 20L refill Made in the UK Sustainable, naturally derived raw materials No petrochemicals, phosphates, preservatives, enzymes or synthetic perfumes Hypoallergenic, suitable for sensitive skin BUAV and Vegan Society Approved Safe for septic tanks and cess pits Readily biodegradable Recycled and recyclable packaging Powerful de-scaler Even more economical. For best results squirt the Toilet Cleaner under the rim of the bowl last thing at night. In the morning use a toilet brush to remove the dissolved scale and flush. Bio-D Concentrated Toilet Cleaner 20L is part of the range of Bio-D 20L products. Bulk buy your favourite Bio-D products and reduce plastic waste with the Bio-D 20L refills range, or explore the full range of popular Bio-D products, including natural household cleaning products, eco laundry products, Bio-D hand wash and more, available from Big Green Smile.