Parozone In-Cistern Our Strongest Bleach Block 3 x 50g

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Our strongest bleach blocks harness the toilet germ-killing power of Parozone bleach. Drop into the cistern to experience bleach power in every flush. Cleans & foams for up to 12 weeks** **Each block lasts up to 4 weeks.
More than 30% Anionic Surfactants, less than 5% Aliphatic Hydrocarbon, Also contains: Disinfectant (Sodium Dichloroisocyanurate Dihydrate 30g / 100g)