Guardian Clean DISHWASHER TABLET Guardian Clean dishwasher tablets are suitable for all dishwasher-resistant materials. The product protects the glass from wear and prevents graying. Guardian Clean effectively cleans coffee and tea stains and breaks down protein and lime deposits. The Guardian Clean tablet is easy and economical to use. Guardian Clean has been awarded the European environmental mark EU flower, which means that the product has met the strict ecological and performance criteria required by the certificate. Clean – Very effective for even the most demanding stains, clean with a single wash. Safe – Ecolabelled. Effective – Effective even at washing temperatures below 55°C.