Niagara Conservation SN3140-6 Toilet Leak Detection Dye Tablets (6 Pack), Blue

Water-saving leak detection toilet dye tablets are used to rapidly identify a leaky toilet tank which can waste thousands of gallons of water per year. Damaged flappers can leak water undetected down your drain. Simply place one packet of leak detection dye tablets into your toilets tank, and if Blue water appears in your bowl, you have a damaged flapper that needs to be replaced. The tablets are non-toxic and contain only fda-certified pigments. Easy to follow, bilingual instructions. Six uses included.