Pestell's LifeMate Health Alert Cat Litter is the first clumping cat litter that contains a pH indicator that will change colour to identify common health problems BEFORE symptoms appear. Many feline health problems are accompanied by a change in urinary pH from normal to high (alkaline) or low (acidic) condition. When you see a change in the urine pH you should monitor your cat's health more closely and consult your local veterinarian. LifeMate is a premium clumping cat litter featuring a low dust, low tracking formula with extra strength odour control. Comes in a 15 kg resealable bag.