[Toilet bowl cleaner tablets]: the foaming action releases millions of powerful air bubbles that fight stains and can reduce the spread of stains in the toilet. [Descaling and deodorising design]: toilet bowl tablets can efficiently remove water scales, urine scales, smudges and other stubborn stains with upgraded active ingredients. It also deodorises the whole toilet with natural fragrance while freshening the toilet bowl in every flush. [Convenient rust stain solution]: simply drop a tablet into the toilet tank without tearing off the white film which can directly dissolve in water. After putting the tablet into the toilet tank, wait for 10 to 30 minutes until it dissolves completely, and then flush the toilet bowl for cleaning. [Safe formula]: safe to use on all plumbing and septic systems. Safe on all parts, chlorine free and septic safe. Cleans jet stream and improves flush. [Automatic powerful foam cleaner]: making deep cleans easier and keeping your bowl looking sparkling and bright. The cleaning pumice is 100% natural and is safe for use around pets and children.