I tried supermarket own brand toilet gel - and the winner is just as good as Harpic or Duck and a third of the price
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Buy Harpic Toilet Cleaner 750ml Eucalyptus Online at Best Prices in India - JioMart.
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HARPIC Gel WC Javel 750 ml (Lot de 2, Eclat et Blancheur Citron Pamplemousse) : : Epicerie