Yope Probiotics Toilet Cleaner 750ml Probiotic. Removes Limescale & Embedded Rust Effectively Combats Stubborn Stains While Leaving A Refreshing Aroma & Friendly Microorganisms That Maintain Longlasting Hygiene. Yope's Probiotic Toilet Cleaner Works Reliably & Rejuvenates & Thanks To Its Thick Consistency It's Economical & Easy To Use. Regular Use Is Recommended.