For A Limited Time Only: Buy 2 get 1 Free on Hills Prescription Diet Feline C/D Reduced Calorie 1.5kg bags. Add 3 to basket, & only pay for 2. Offer ends 31st December 2011 Hills Prescription Diet Feline C/D Reduced Calorie for the Nutritional Management of Pets with Struvite Related Feline Lower Urinary Tract Disease (FLUTD). FLUTD is a condition often associated with the formation of crystals in the urinary tract that can cause numerous painful symptoms for