Frog HD Toilet Cleaner is a cling thick formulation which removes the heaviest deposits of lime scale and uric acid. Fully biodegradable, presents no e uent problems. Safe to use on all plastics, ceramics, and stainless steel surfaces. Leaves a fresh clean fragrance a er use. Use Frog HD Toilet Cleaner as supplied, Apply to surfaces to be treated and leave for an adequate contact time and then rinse o . Use daily to avoid scale build up. Pleas refer to the material safety data sheet before use.