FLUTD or Feline Urinary Tract Disease is often associated with struvite, mostly in the form of struvite crystals. Kidney & bladder stones in cats often lead to urinary tract problems. The number of cases with these problems is constantly increasing & affected cats suffer greatly from it. Typical symptoms of such a condition are frequent yet minimal urination, often accompanied by pain. Your cat may also start urinating in locations other than the litter box. You can however avoid the buildup of struvite stones quite easily. DL-methionine is added to Grau FLUTD Paste, which reduces the p H of your cat's urine, actively making it more acidic & thereby combating the buildup of struvite crystals. Grau FLUTD Paste is part of the Grau Cat Care Plus Concept, which follows the principles of vitality, well-being & good quality of life for your cat. Sensible dietary supplements that your cat will lap up made with the guidance of plenty of experience are brought together under the name Cat Care Plus. Grau Cat Care Plus FLUTD Paste (Urinary Tract): Delicious cat paste from Grau Cat Care Plus DL-methionine reduces the p H of urine Prevents the buildup of struvite stones Maintains vitality & well-being If you suspect a urinary tract issue, it's vital to first obtain a positive diagnosis from your vet confirming that the issue in fact is struvite crystals. If such is the case, it is also recommended that you switch to a higher quality, meaty but low in magnesium diet such as Grau Miezelinos Adult Urine-p H Special.