This will promote more dilute urine, which is less likely to contribute to the inflammation of the bladder. Some “tricks” to encourage your cat into drinking more water:
a. Feed all canned food. Canned pet foods generally are 60-70% water.
b. Have multiple water dishes for your cat. Many cats are lazy and often won’t travel all the way downstairs to drink when they are on a comfortable perch in an upstairs window. Having dishes in multiple locations greatly increases the likelihood your cat will drink enough water. Some finicky cats will only drink fresh or bottled water.
c. Salt the food. Adding a pinch of table salt (NaCl) or “LiteSalt” (KCl) can increase your cat’s thirst.
d. Leave a source of running water. Some cats much prefer to drink from a dripping faucet or swirling water in a fish tank (etc., etc.) There are commercial products available in pet product catalogs that serve a similar purpose.
There are several veterinary prescription diets that are designed to reduce your cat’s chances of having an FLUTD flare-up. These diets are generally designed to produce an acidic urinary pH and have reduced levels of Magnesium and Phosphorus. Several examples are Hill’s Prescription C/D, Purina UR-Formula, and Waltham Feline Control pHormula diets.